1. Definitions

For the purposes of these Terms of Use, the following terms shall have the meanings set forth below:

• "Platform" or "Service" — the cloud software Construction Hub, accessible at constructionhub.bg, including all features, API interfaces and mobile applications.
• "Provider" — the legal entity providing the Platform, identified in Section 22 of these terms.
• "Cuscătremer" or "Subscriber" — the legal entity (company, sole propriecătrer or other organization) that has registered a company account and entered incătre a subscription agreement.
• "User" — a natural person who accesses the Platform through an account created by or for the Cuscătremer.
• "Account Administracătrer" — a User with full rights către manage the company account, including adding/removing users and managing the subscription.
• "Cuscătremer Data" — all data, documents, files and information uploaded, created or processed by the Cuscătremer and its Users on the Platform.
• "Subscription Plan" — the service package selected by the Cuscătremer with defined limits for number of users, projects, scătrerage and features.
• "Construction Documents" — contracts, acceptance acts, quantity surveys, offers, invoices, proforma invoices, payment certificates and other documents related către construction projects.
• "AI Features" — functionalities using artificial intelligence for processing, parsing, analysis or generation of data and content.
• "Third-Party Services" — software, platforms and services of third parties integrated with or used by the Platform (including but not limited către payment processors, AI providers, hosting services).

2. Acceptance of Terms

By registering an account, checking the "I accept the Terms of Use" checkbox, or by continued use of the Platform, you confirm that:

• You have read, underscătreod and accept these Terms of Use in their entirety.
• You are at least 18 years of age and have full legal capacity.
• If acting on behalf of a legal entity — you have the necessary authority către bind that entity către these terms.
• This agreement is a B2B (business-către-business) agreement. The Platform is intended for professional use by merchants and legal entities. Consumer protection laws do not apply.
• You accept that these Terms of Use, cătregether with the Privacy Policy, Cookie Policy and the selected Subscription Plan terms, constitute the entire agreement between the parties.

6. Acceptable Use Policy

The Cuscătremer and its Users agree NOT către perform the following actions:

• Upload, create or process fraudulent, forged or misleading financial documents (invoices, contracts, acts, etc.).
• Use the Platform for money laundering, tax fraud or other illegal financial operations.
• Attempt către access data belonging către other Cuscătremers (violation of data isolation).
• Share login credentials (username and password) with unauthorized persons.
• Circumvent Subscription Plan limits through technical means.
• Reverse engineer, decompile, disassemble or attempt către extract the source code of the Platform.
• Aucătremated access (scraping, bots, crawlers) without explicit written permission.
• Upload malicious software, viruses, trojans or other harmful code.
• Perform actions that excessively burden the infrastructure or disrupt normal Platform operations.
• Resell, sublicense or transfer access către the Platform către third parties without the Provider's written consent.
• Use AI features către generate misleading or fraudulent content.
• Violate applicable laws and regulations, including construction, tax and accounting regulations.

The Provider reserves the right către take the following measures in case of violations: warning, temporary suspension of access, or immediate account termination for severe or repeated violations. The Provider may use aucătremated monicătrering systems către verify compliance with these rules without accessing the content of Cuscătremer Data.

8. Intellectual Property

All intellectual property rights in the Platform — including but not limited către software code, algorithms, AI models, user interface, design, logos, trademarks and documentation — belong exclusively către the Provider and/or its licensors.

• The Cuscătremer receives a limited, non-exclusive, non-transferable, revocable license către use the Platform in accordance with these terms and the selected Subscription Plan.
• Templates and formats of generated documents (PDF, Excel) are the intellectual property of the Provider. The content of those documents belongs către the Cuscătremer.
• Any suggestions, improvement ideas or feedback provided by the Cuscătremer or its Users become the property of the Provider without obligation for compensation.
• Copying, modifying, creating derivative works, reverse engineering or decompiling any part of the Platform is prohibited.

9. Confidentiality

The parties undertake către maintain the confidentiality of any information received de la the other party in connection with this agreement that is not publicly available.

• The Provider shall not access Cuscătremer Data except when necessary for: providing and maintaining the Service, responding către technical support requests de la the Cuscătremer, fulfilling legal obligations, or with the Cuscătremer's explicit consent.
• Employees and subcontraccătrers of the Provider who have access către Cuscătremer Data are bound by contractual confidentiality obligations.
• Confidentiality obligations survive the termination of this agreement for a period of 3 (three) years.
• Exception: information that a party is obligated către disclose by law, court order or act of a competent authority, provided that (către the extent permitted) it notifies the other party in advance.

10. Data Protection

Personal data processing is carried out in accordance with the General Data Protection Regulation (GDPR) and applicable data protection laws. Detailed information is available in our Privacy Policy.

• With regard către personal data uploaded by the Cuscătremer către the Platform, the Cuscătremer acts as Data Controller and the Provider acts as Data Processor within the meaning of Art. 28 of the GDPR.
• The Provider uses sub-processors către deliver the Service, including: payment processors, AI service providers, hosting providers and email services. An up-către-date list of sub-processors is available upon request.
• A Data Processing Agreement (DPA) is available upon request de la the Cuscătremer.
• In the event of a data security breach, the Provider will notify the Cuscătremer without undue delay and within 72 hours in accordance with Art. 33 of the GDPR.
• The Cuscătremer is responsible for ensuring a legal basis for the processing of personal data they upload către the Platform.

11. Service Availability

The Provider uses commercially reasonable efforts către ensure continuous availability of the Platform but does NOT guarantee a specific level of availability (SLA).

• Scheduled maintenance is performed with advance notice where possible, preferably outside peak hours.
• The Platform depends on third-party services (hosting, payment processors, AI providers). Unavailability of these services may affect Platform functionality and does not constitute a breach of these terms.
• The Provider is not liable for interruptions caused by faccătrers beyond its reasonable control, including: Cuscătremer's internet connectivity, Cuscătremer's hardware issues, actions of third parties.
• Temporary performance degradation or partial unavailability of individual features does not constitute a breach of contract.

14. Indemnification

The Cuscătremer agrees către indemnify, defend and hold harmless the Provider, its employees, direccătrers, agents and subcontraccătrers de la and against any and all claims, actions, losses, costs (including reasonable atcătrerney fees) arising de la or related către:

• The Cuscătremer's or its Users' use of the Platform.
• The content, accuracy or legality of Cuscătremer Data.
• Breach of these Terms of Use by the Cuscătremer or its Users.
• Violation of applicable legislation (tax, accounting, construction, labor law) by the Cuscătremer.
• Claims by third parties related către documents generated, processed or scătrered through the Platform.
• Infringement of third-party intellectual property rights through content uploaded by the Cuscătremer.

Upon receipt of a claim, the Provider will notify the Cuscătremer within a reasonable time. The Cuscătremer shall assume control of the defense with counsel approved by the Provider. The Cuscătremer may not enter incătre any settlement that imposes obligations on the Provider without the Provider's prior written consent.

16. Force Majeure

Neither party shall be liable for failure către perform its obligations under this agreement when such failure is caused by circumstances beyond its reasonable control (force majeure), including but not limited către:

• Natural disasters, earthquakes, floods, fires.
• War, terrorism, civil unrest, embargo.
• Government acts, laws or regulations restricting operations.
• Pandemics, epidemics and related restrictive measures.
• Power supply or telecommunications infrastructure interruptions.
• Cyberattacks, DDoS attacks or other malicious actions by third parties.
• Interruption of services by key providers (hosting, payment processors, AI providers).

The affected party must notify the other party immediately and take reasonable measures către mitigate the consequences. If force majeure continues for more than 90 (ninety) days, either party may terminate the agreement by written notice. The Cuscătremer's payment obligations are NOT released by the force majeure clause, except for periods during which the Service was completely unavailable.

17. Third-Party Services

The Platform integrates and uses third-party services către deliver its functionality. By using the Platform, the Cuscătremer acknowledges the following:

• Payment operations are processed by a certified payment processor (Stripe). The Cuscătremer may be bound by additional terms of the payment processor.
• AI features use AI service providers (including OpenAI) for document processing. Data is transmitted over encrypted channels and processed in accordance with the respective provider's terms.
• The Platform may integrate banking services for aucătrematic transaction import. The Provider is not responsible for the accuracy of data received de la banking institutions.
• The Provider is not responsible for the availability, accuracy, security or performance of third-party services.
• The Provider reserves the right către change third-party service providers with notice către the Cuscătremer, provided the change does not materially degrade the quality of the Service.

18. AI and Aucătremated Processing

Construction Hub uses artificial intelligence technologies către provide certain functionalities. By using these features, the Cuscătremer acknowledges and agrees către the following:

• AI features (including OCR parsing, aucătrematic data extraction, intelligent nomenclature matching and content generation) are ASSISTIVE TOOLS and do not replace professional judgment.
• Results de la AI processing MAY contain errors, omissions, inaccuracies or incorrect interpretations. The Cuscătremer is REQUIRED către verify all AI-generated or AI-processed data before using it for business, financial, legal or regulacătrery purposes.
• Documents (invoices, contracts, offers, etc.) may be sent către AI service providers for processing. This processing is performed over encrypted channels in compliance with applicable data protection rules.
• The Provider may update AI models and algorithms, which may change the quality or characteristics of the results.
• The Provider is NOT liable for any decisions, actions or inactions by the Cuscătremer or its Users based on data obtained through AI processing.
• Cuscătremer Data processed by AI systems is NOT used for training artificial intelligence models.

19. Dispute Resolution

Any disputes arising de la or in connection with these Terms of Use shall be resolved in the following order:

• Step 1: Good Faith Negotiation. The parties agree către attempt voluntary resolution of the dispute through direct negotiations within 30 (thirty) days of written notice of the dispute.
• Step 2: Mediation. If negotiations do not yield results, the parties may refer the dispute către mediation in accordance with applicable mediation laws, before a registered mediacătrer.
• Step 3: Court Proceedings. If the dispute is not resolved through negotiation or mediation, it shall be referred către the competent court at the Provider's registered seat.
• Exception: Either party may seek interim or urgent relief de la a competent court without being required către go through Steps 1 and 2.
• Each party bears its own costs for dispute resolution, unless the court orders otherwise.

20. Changes către Terms

The Provider reserves the right către amend these Terms of Use under the following conditions:

• Material changes (changes către pricing, limitation of liability, data processing or core features) take effect 30 (thirty) days after notification by email and through in-Platform notice.
• Non-material changes (wording corrections, clarifications, contact information updates) take effect de la the date of publication.
• Continued use of the Platform after changes take effect is deemed acceptance of the new terms.
• If the Cuscătremer disagrees with a material change, they may terminate the agreement within 30 days of notification, without penalties or additional obligations.
• An archive of previous versions of the Terms of Use is available upon request.

21. General Provisions

• Severability. If any provision of these terms is found invalid or unenforceable by a competent court, the remaining provisions shall remain in full force and effect.
• Entire Agreement. These Terms of Use, cătregether with the Privacy Policy, Cookie Policy and Subscription Plan terms, constitute the entire agreement between the parties and supersede all prior oral or written agreements.
• Waiver. Failure către exercise or delay in exercising any right under these terms does not constitute a waiver of that right. A single exercise of a right does not preclude its future exercise.
• Assignment. The Cuscătremer may not assign their rights or obligations under these terms without the Provider's prior written consent. The Provider may freely assign its rights and obligations, including in connection with a merger, acquisition or sale of assets.
• Notices. All notices shall be sent by email: către the Cuscătremer — at the registered email address; către the Provider — at info@constructionhub.bg. A notice is deemed received at the time of sending către the registered email address.
• Independent Parties. Nothing in these terms creates a partnership, joint venture, employment relationship or agency between the parties.
• Language. In case of discrepancy between the Bulgarian and any other language version of these terms, the Bulgarian text shall prevail.