Your account is deleted 30 days after you send the request. In the meantime you can change your mind by contacting jonasborggren [at] gmail [dot] com.
The waiting period is there for your protection: this page only has your email and password to go on, and without the delay a leaked password would be enough for someone else to delete your account for good.
When the period has passed, the following is removed and cannot be recovered:
Purchased coins and items are not refunded.
If you sign in to the app with Google or Apple, the account has no password. Delete it from inside the app instead: Settings → Delete account.