Open Settings → Account and tap Delete under Your data. Your account is deleted 7 days later. Until then you cannot play, but you can open the game and tap Cancel deletion to keep your account. If you have linked an email, we email you when the deletion is scheduled and when it is done.
Deletion removes your progress, balances, items, linked email and support conversations, and it cannot be undone: purchases cannot be restored afterwards.
You can also ask us to delete your account by writing to support@greenergrass.company from the email linked to it.