# Sudoku Studio — Seller and Contact Details

**Effective date: 20 October 2026 · Version: 2026-10-20.**

## Operator

- Trading name: Sudoku Studio
- Legal seller and data controller: Serhii Sukhodolskyi, individual operator
- Country of establishment: Spain
- Business correspondence address: Av. del Primat Reig, 37, 3-5, Valencia, Valencia, 46019, Spain
- Website: https://sudokustudio.eu
- Support, complaints, cancellation, refund and privacy email: support@sudokustudio.eu

## How to contact us

Email support@sudokustudio.eu for pre-sales questions, technical help, complaints,
cancellation, withdrawal, account erasure or data export requests. You do not
need an active subscription or access to the studio to contact us. You may also
send correspondence to the address above.

Include your username and a relevant order or invoice reference where available.
Never send passwords, full card numbers, CVC codes or secret API keys.

See our Terms of Service, Privacy Notice and Cancellation, Withdrawal and Refund
Policy for details. These documents are available on this website and as
plain-text Markdown downloads for saving or printing.