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Contract of adhesion · Version 2.0

Public
offer.

An official proposal to enter into a contract for digital services on the terms set out below. Payment by any method described in this document constitutes full and unconditional acceptance of these terms.

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Document

Public offer (contract of adhesion)

Version

2.0 of 05.08.2026

Provider

Andrii Dubniuk

Jurisdiction

Ukraine

Delivery format

Remote, online

Physical shipping

None

01

General provisions

This document is an official public proposal (offer) by Andrii Dubniuk (the "Provider") to enter into a contract for digital services on the terms below, addressed to an indefinite range of persons under Articles 633, 641 and 642 of the Civil Code of Ukraine.

A contract concluded on the basis of this offer is a contract of adhesion within the meaning of Article 634 of the Civil Code of Ukraine: its terms are set by the Provider and can be accepted by the Client only by adhering to the contract as a whole.

The offer is deemed accepted when the Client does any of the following: submits a request through the form on the site with the consent checkbox ticked; makes a payment via a payment link or the Provider's billing service; confirms an agreed scope and price in writing, including by email or messenger.

Acceptance means the Client has read the terms in full, understands them and accepts them without reservation. The contract is concluded in written (electronic) form and is legally binding under Article 11 of the Law of Ukraine "On Electronic Commerce" No. 675-VIII.

The language of the contract is Ukrainian. This English version is provided for information; in case of any discrepancy in interpretation, the Ukrainian version prevails.

The current version of the offer is permanently available at https://avia.ovh/offer.

02

Definitions

"Site" — the web pages at https://avia.ovh, including the billing subdomain https://billing.avia.ovh.

"Provider" — the business entity identified in Article 03 of this offer, which supplies the digital services.

"Client" — a natural person, a registered sole trader or a legal entity that has accepted the terms of this offer.

"Consumer" — a Client who is a natural person ordering services for purposes unrelated to business activity. The Law of Ukraine "On Consumer Protection" No. 1023-XII additionally applies to such a Client.

"Services" — the digital services described in Article 04 of this offer.

"Stage" — a discrete, agreed portion of work with its own timeline, price and completion criteria.

"Result" — the digital deliverable: a working site or application, functionality, an integration, source code, design files, access credentials or another agreed deliverable.

"Subscription" — a service supplied periodically (annually or monthly) with automatic charging until cancelled by the Client.

"Acquirer" — JSC UNIVERSAL BANK (monobank Acquiring / Plata by mono), through which online payments are accepted.

03

Provider details

Full legal name: Andrii Dubniuk.

Registered address / place of business: Ukraine, Zhytomyr.

Email for any enquiry, including legally significant notices, claims and questions about payments and subscriptions: support@avia.ovh.

Claims procedure: a written notice to support@avia.ovh or to the postal address above. Review period — up to fourteen calendar days. Working hours: Mon–Fri, 10:00–18:00 (Kyiv time).

All prices on the site are stated in Ukrainian hryvnia (UAH) and are final for the Client: no additional taxes or charges are added on top of the stated amount.

The Provider's activity is not subject to licensing. No licence or permit is required to supply the services described in this offer.

These details are published pursuant to Article 7 of the Law of Ukraine "On Electronic Commerce" No. 675-VIII and Article 13(2) of the Law of Ukraine "On Consumer Protection" No. 1023-XII.

04

Subject matter of the contract

The Provider undertakes to supply digital services covering the planning, design, development, integration, launch and support of web solutions and software, and the Client undertakes to accept and pay for those services on the terms of this offer.

Services may include: landing pages, corporate websites, MVPs, web services, client portals and account areas, mobile applications, custom software, CRM/API integrations, automations, product design and branding, SEO, setup and management of advertising campaigns, AI integrations, technical audits, product strategy and ongoing technical support.

The essential characteristics of a specific service — scope of work, functional requirements, number of pages or screens, list of integrations, technology stack, timelines and completion criteria — are agreed individually and recorded in an agreed scope (brief, specification, proposal or invoice) before payment.

The agreed scope forms an integral part of the contract. Where this offer and the individually agreed scope conflict, the agreed scope prevails.

The Provider does not supply financial, payment, banking, insurance, legal, medical or educational services and does not act as an intermediary in supplying them.

05

Formation of the electronic contract

Technology of formation: the Client reviews the terms at https://avia.ovh/offer and then performs one of the acceptance actions listed in Article 01. No form on the site can be submitted without the Client actively confirming agreement with this offer and the privacy policy.

Electronic signature: the parties agree that, for the purposes of this contract, an electronic signature by one-time identifier or an analogue of a handwritten signature is used within the meaning of Article 12 of the Law of Ukraine "On Electronic Commerce" No. 675-VIII. This includes ticking the consent box in a form on the site, confirming a payment with a one-time code (3-D Secure) on the issuing bank's side, and correspondence from the Client's email address.

Method of acceptance: acceptance is performed as described in Article 01 and does not require signing paper documents. At the Client's written request the Provider will additionally issue the contract and acts on paper or with a qualified electronic signature.

Exchange of notices: legally significant notices are sent by email to the addresses stated by the parties. A notice is deemed received on the next business day after dispatch unless a delivery failure notification is received.

Correction of input errors: before payment the Client may detect and correct errors by returning to the previous step of the form or by writing to support@avia.ovh. A technical error discovered after payment (duplicate charge, wrong amount, wrong plan) is corrected by refunding the excess under Article 13 of this offer.

Amendment of terms: individual terms (scope, timelines, price) may be changed only by written agreement of both parties. The general terms of this offer are amended by the Provider under Article 19.

Access to documents: this contract, the agreed scope, invoices and correspondence are retained by the Provider and supplied to the Client on request to support@avia.ovh within the retention periods set out in the privacy policy.

This Article is drafted pursuant to Article 11(3) of the Law of Ukraine "On Electronic Commerce" No. 675-VIII.

06

How services are delivered

Services are delivered remotely using means of distance communication — the website, email, messengers and video calls. In-person meetings are not a required condition of delivery.

There is no physical shipment. The subject of the contract is a service and its digital result, not a tangible item. Accordingly no delivery costs are charged, and the rules on returning goods of proper quality do not apply to this contract.

The result is handed over electronically: by deployment to an agreed environment, by granting access, by transferring a repository or an archive with source code, by supplying design files, or by another agreed method.

The Provider may engage third parties (subcontractors, contractors, cloud service providers) while remaining responsible to the Client for the result.

Timelines are counted in business days and start running on the day after the later of: receipt of payment for the stage, and the Client supplying all necessary materials, access credentials and answers to clarifying questions.

Timelines are extended by any period during which the Client delays supplying materials, access, feedback or approvals, without any sanction against the Provider for such extension.

07

Price and payment

Prices shown on the site in a "from" format are starting reference points for the relevant service line and are not the final price of a specific order. Such prices are not a proposal to contract at the stated amount.

The final price is formed individually after the task, functionality, scope, timelines, number of pages, integrations and other requirements are clarified, and is communicated to the Client before payment. The price is deemed agreed once confirmed by the Client in writing or upon payment.

All prices are stated in Ukrainian hryvnia (UAH). The price is final for the Client; taxes and charges payable by the Provider are already included and are not added separately.

Payment is made by non-cash means: online card payment through the acquirer, by bank transfer to the Provider's account, or through the billing service page — depending on the agreed method.

Work may be performed in stages with prepayment of each stage. The default prepayment is 100% of the stage price unless the parties agree otherwise in writing.

Fees charged to the Client by the Client's bank, payment systems or intermediaries are borne by the Client and do not reduce the amount credited to the Provider.

The Provider has no access to the Client's card details and does not store them — the card is entered only on the acquirer's secure page.

Changes to the agreed scope requested by the Client after a stage has begun are documented separately and may change the price and the timeline.

08

Online payment and acquiring

Online payments are accepted through JSC UNIVERSAL BANK (monobank Acquiring / Plata by mono) under an acquiring agreement. Payment transactions are executed in accordance with the Law of Ukraine "On Payment Services" No. 1591-IX and the rules of the international card schemes.

Visa and Mastercard cards are accepted, as well as Apple Pay and Google Pay. The transaction currency is Ukrainian hryvnia (UAH).

Card details are entered by the Client on the acquirer's secure payment page using TLS encryption and 3-D Secure authentication. The Provider does not receive, process or store the card number, expiry date or CVV/CVC code. Payment data is processed by the acquirer in accordance with the PCI DSS security standard.

From the acquirer the Provider receives only operational data about the transaction: its status, amount, currency, time, invoice and subscription identifiers, and, for stored cards, the masked number (first and last digits) and expiry date. This data is used to confirm payment, keep records and provide support.

The Provider's obligation regarding acceptance of payment is discharged when funds are credited to its account. The payment date is the date the transaction is successfully completed as confirmed by the acquirer.

If a transaction is declined by the issuing bank or the acquirer, the Provider is not responsible for the decline and has no technical means to reverse it. The Client should clarify the reason with their own bank.

The Client may dispute a transaction (initiate a chargeback) through their issuing bank within the periods and in the manner set by the card scheme rules and payment services legislation. This right does not depend on and is not waived by this offer.

Payment confirmation is sent to the email address provided by the Client. A fiscal receipt is issued in the cases and in the manner prescribed by the Law of Ukraine "On the Use of Payment Transaction Recorders" No. 265/95-VR.

09

Subscriptions and automatic renewal

Certain services may be supplied as a subscription with recurring charges. The subscription type, price, charging frequency and the date of the first charge are shown on the payment page before the payment is confirmed.

By taking out a subscription the Client consents to the card payment token being stored by the acquirer and to the fee being charged automatically for each subsequent period without further confirmation. Consent is given by a separate action on the payment page.

Each subsequent charge equals the subscription price in force on the charge date. The Provider notifies the Client by email of any change in the subscription price no later than thirty calendar days before the date of the first charge at the new price. The Client may cancel auto-renewal before that date.

Auto-renewal continues until cancelled by the Client. It can be cancelled at any time before the next charge: via the subscription management page at https://billing.avia.ovh/portal or by writing to support@avia.ovh. Cancellation takes effect immediately and requires no explanation.

Cancelling auto-renewal does not terminate the current paid period: the service continues to the end of the period already paid for, after which the subscription ends with no further charge.

If a charge fails (insufficient funds, expired card, revoked token) the Provider retries according to the configured schedule and notifies the Client by email. If payment is not received after the retries are exhausted, the service is suspended and the subscription may be terminated.

The Client must keep their payment method details and contact email address up to date for as long as the subscription is active.

This Article reflects the transparency requirements for recurring payments imposed by the acquirer and by the international card scheme rules for merchant-initiated transactions.

10

Delivery and acceptance of the result

After the offer is accepted and payment is received, the parties record the way of working, the scope, timeframes and completion criteria for the relevant stage.

On completion of a stage the Provider hands over the result and notifies the Client by email. Where required, the parties sign an act of services rendered, on paper or electronically.

The Client reviews the result and provides comments within five business days of hand-over. Comments must be specific and relate to the agreed scope.

If within five business days the Client provides no comments and does not sign the act, the services are deemed properly rendered and accepted in full. This does not deprive a Consumer of the rights under Article 10 of the Law of Ukraine "On Consumer Protection" No. 1023-XII.

Justified comments concerning a mismatch between the result and the agreed scope are remedied by the Provider free of charge within a reasonable time.

Work beyond the agreed scope is performed under a separate agreement and for a separate fee.

The Provider warrants the remedy of technical defects in the result caused by the Provider for thirty calendar days from hand-over, unless a longer period is agreed. The warranty does not cover faults caused by changes made by the Client or third parties, by failures of third-party services, hosting or domains, or by updates to third-party software.

11

Rights and obligations of the parties

The Provider shall: supply the services within the agreed scope and timelines; maintain confidentiality of the Client's materials and data; notify the Client of circumstances affecting timelines or the result; hand over the result in the agreed form.

The Provider may: engage third parties; suspend delivery if payment is overdue or if the Client fails to supply required materials and access; withdraw from the contract in the cases set out in this offer; use an anonymised description of the completed work in its portfolio and marketing materials, unless the parties have agreed otherwise in writing.

The Client shall: supply accurate materials, access, content and feedback on time; pay for the services within the agreed periods; warrant that materials supplied to the Provider do not infringe third-party rights; provide accurate contact and registration details.

The Client may: receive information on the progress of the services; provide comments within the agreed scope; withdraw from the contract under Article 12 of this offer; submit claims under Article 18.

The Client is solely responsible for the lawfulness of the content, data and materials it supplies to the Provider or publishes in the created product, and for the compliance of its own activity with the law.

The Client may not use the services or the result for activity prohibited by Ukrainian law, in particular fraud, distribution of malware, unlawful processing of personal data or infringement of third-party intellectual property rights.

12

The Client's right of withdrawal

A Client who is a Consumer may terminate a distance contract by notifying the Provider in writing within fourteen days from confirmation of the information about the service — under Article 13(4) of the Law of Ukraine "On Consumer Protection" No. 1023-XII.

If the Provider has not supplied the Consumer with confirmation of the information required by Article 13(2) of that Law, the termination period is ninety days from receipt of such information.

The notice of termination is sent to support@avia.ovh and must state the Client's name, the date and amount of the payment, the order or subscription identifier and the details for the refund.

However, a Consumer may not terminate the contract where the supply of the service by electronic means began with the Consumer's consent before the end of the termination period — Article 13(5)(1) of the Law of Ukraine "On Consumer Protection" No. 1023-XII. By ordering a service with immediate commencement, the Client confirms awareness of the loss of the right of withdrawal in that part.

If at the time of withdrawal the service has begun but is not complete, the Client pays for the part actually rendered and the balance is refunded.

A Client who is not a Consumer (a sole trader or legal entity ordering services for business purposes) may withdraw from the contract on payment for the services actually rendered and the Provider's actual costs incurred, under Article 907 of the Civil Code of Ukraine.

The Provider may withdraw from the contract if the Client systematically breaches deadlines for supplying materials or for payment, or if performance has become impossible for reasons beyond the Provider's control. In that case the Client is refunded for services not rendered.

13

Refunds

Refunds are made in Ukrainian hryvnia to the same payment method and details from which the payment came, unless the acquirer's or the payment system's technical rules require otherwise.

The refund period is up to ten banking days from the date the parties agree the refund amount. Actual crediting to the Client's account depends on the issuing bank and may take longer; the Provider is not responsible for that period.

The Provider does not deduct its own commission from a refund. Fees of the Client's bank or of the payment system, if any, are refunded according to the tariffs of those institutions.

A full refund is made where delivery of the service has not yet begun, and in the case of an erroneous or duplicate payment, a charge on a cancelled subscription, or a technical error in the amount or the plan.

If delivery has begun, the refund is made less the value of the part actually rendered and the Provider's documented costs incurred in performing the contract (licences, domains, hosting, subcontractors). The calculation is provided to the Client in writing.

No refund is made for stages whose result has been accepted or is deemed accepted under Article 10 of this offer, except where hidden defects for which the Provider is responsible are found.

For subscriptions, the fee for the current paid period is not refunded on cancellation of auto-renewal, because the service continues to the end of that period. A refund is made if a charge occurred after the subscription had been properly cancelled, or if the service for the paid period was in fact not supplied through the Provider's fault.

This Article does not limit the rights of a Consumer under Articles 10 and 13 of the Law of Ukraine "On Consumer Protection" No. 1023-XII and does not remove the Client's right to dispute a transaction through their issuing bank.

14

Intellectual property

Economic intellectual property rights in the result created by the Provider to order pass to the Client upon full payment for the relevant stage, unless the parties agree otherwise in writing. The transfer is made under the Law of Ukraine "On Copyright and Related Rights" No. 2811-IX.

Until full payment the result is supplied to the Client for review and acceptance only; commercial use of an unpaid result is not permitted.

The Provider retains rights in its own general-purpose assets — libraries, templates, components, internal tools and methodologies — used in creating the result. The Client receives a non-exclusive, perpetual, irrevocable licence to use them as part of the result.

Rights in third-party open-source software, fonts, images, plugins and services used in the result belong to their rights holders and are governed by the relevant licences. The Provider will disclose the licences used on request.

The Client warrants that texts, images, logos, trade marks and other materials it supplies to the Provider do not infringe third-party rights and bears sole responsibility for any such infringement.

The Provider may state the fact of the engagement and display the publicly available part of the result in its portfolio, unless the parties have agreed a non-disclosure regime in writing.

15

Confidentiality and personal data

The parties undertake not to disclose to third parties confidential information obtained during performance — commercial terms, technical documentation, access credentials, business data — except where disclosure is required by law or is necessary for performance by engaged subcontractors.

Personal data of the Client and its representatives is processed under the Law of Ukraine "On Personal Data Protection" No. 2297-VI and is described in detail in the Privacy Policy at https://avia.ovh/privacy, which forms an integral part of this contract.

Where, in the course of delivering the services, the Provider processes personal data of the Client's own users, the Provider acts as a processor on the instructions of the Client as controller, within the limits set by the contract or a separate instruction.

The Client warrants that it has a lawful basis for transferring third-party personal data to the Provider and is responsible for the lawfulness of such transfer.

By accepting this offer the Client confirms that it has read the Privacy Policy and has been informed of its rights as a data subject under Article 8 of the Law of Ukraine "On Personal Data Protection" No. 2297-VI.

16

Liability

The parties are liable for non-performance or improper performance of their obligations in accordance with this offer and Ukrainian law.

The Provider is responsible for the conformity of the services with the agreed scope. The Provider is not responsible for the commercial outcome the Client expects from using the result — sales volume, search rankings, conversion, user numbers — as these depend on factors outside the Provider's control.

The Provider is not responsible for disruptions caused by acts or omissions of third parties: hosting providers, domain registrars, payment systems, API providers, electronic communications operators, or for the consequences of changes in their rules or tariffs.

The Provider's aggregate liability under the contract is limited to the amount actually paid by the Client for the stage giving rise to the claim. The Provider does not compensate lost profit or indirect losses. This limitation does not apply in cases of the Provider's intent or gross negligence, nor to the extent its application would conflict with mandatory consumer protection rules.

Where the Provider is at fault for late delivery, a Consumer is entitled to a penalty of three per cent of the price of the service for each day of delay, under Article 10(5) of the Law of Ukraine "On Consumer Protection" No. 1023-XII.

The Client is responsible for the accuracy of the information supplied, the lawfulness of transferred materials and timely payment. If payment is overdue, the Provider may suspend delivery until it is received.

17

Force majeure

The parties are released from liability for non-performance caused by force majeure: hostilities, armed aggression, missile attacks, a state of emergency or martial law, prolonged outages of electricity and communications, natural disasters, epidemics, decisions of public authorities, large-scale cyberattacks and other events beyond the parties' reasonable control.

The affected party notifies the other party within a reasonable time. Deadlines are extended for the duration of the relevant circumstances.

Force majeure does not release the Client from the obligation to pay for services actually rendered.

If force majeure lasts more than sixty consecutive calendar days, either party may terminate the contract with final settlement for services actually rendered.

18

Claims and dispute resolution

A claim is submitted in writing to support@avia.ovh or to the Provider's postal address in Article 03. It must state: the Client's name, contact details, the date and amount of the payment, the order or subscription identifier, the substance of the demand and the desired remedy.

The Provider reviews the claim and replies in writing within fourteen calendar days of receipt. Where additional verification is needed, the period may be extended to thirty calendar days with notice to the Client explaining the reason.

The parties will seek to settle disputes through negotiation. The pre-trial settlement procedure is mandatory.

A Consumer may also complain to the State Service of Ukraine for Food Safety and Consumer Protection and its territorial bodies, and, as regards personal data processing, to the Ukrainian Parliament Commissioner for Human Rights.

Disputes concerning payment transactions may also be raised with the Client's issuing bank under the Law of Ukraine "On Payment Services" No. 1591-IX and the card scheme rules.

Failing agreement, disputes are resolved by the courts under Ukrainian law. A Consumer may bring a claim at their place of residence under the Civil Procedure Code of Ukraine.

The contract is governed by the substantive law of Ukraine regardless of the Client's location.

19

Term of the offer and amendments

The offer takes effect when published on the site and remains in force indefinitely — until withdrawn or replaced by a new version.

The Provider may amend the terms of this offer unilaterally. A new version takes effect when published at https://avia.ovh/offer, unless a different date is stated in it.

Contracts concluded before a new version takes effect are governed by the version in force on the date of acceptance, except for changes that improve the Client's position or are required by law.

The Provider notifies Clients by email of material changes affecting active subscriptions — in particular changes to price or charging frequency — no later than thirty calendar days before they take effect. A Client who disagrees cancels auto-renewal before the next charge date.

Continued use of the services after a new version takes effect constitutes the Client's agreement with it.

Current version: 2.0 of 05.08.2026. Previous versions are available on request to support@avia.ovh.

20

Final provisions

The contract remains in force until the parties have fully performed their obligations and, for subscriptions, until the subscription ends and settlements are complete.

The invalidity or unenforceability of any provision of this offer does not affect the validity of its other provisions or of the contract as a whole.

The parties recognise the legal force of documents and notices exchanged by email from the addresses stated in the contract, and of messages in messengers agreed as a working communication channel.

A Client who is a natural person confirms that they are at least eighteen years old and have the legal capacity to enter into this contract.

A Client acting on behalf of a legal entity or a sole trader confirms that they are authorised to enter into the contract.

Anything not covered by this offer is governed by Ukrainian law.

Next step

Scope first, payment after.

Describe the task in a few lines. We come back with an estimate, stages and a starting budget before any payment. Questions about these terms — support@avia.ovh.