Email support@zsquared.uk. One person reads it, and you will get a reply.
Open You in the app and choose to delete your account. You will be asked to type a confirmation. Everything goes: lessons, puzzles, games, tutor conversations and your sign-in identity. It cannot be undone.
The tutor is an AI and it can be wrong. Its readings of a position come from a Go engine, but the explanation around them is generated text. Send the puzzle or lesson name and what it told you, and it gets looked at.
Tell us what you were doing, what you expected, and what happened instead. A screenshot helps. Your device model and iOS version help more.
An app for learning Go, with lessons, tsumego puzzles, games against a computer opponent, and a tutor you can ask about any position on the board. There are no adverts, no subscriptions, no leaderboards and no social features.