If you are an ABN Amro customer, you need to remove the bank connection to the ABN Amro account in order to delete a user account.
How to delete a child user account
Go to Settings in your parent account.
Select Bank accounts.
Tap the red trash can icon next to the bank account you want to remove.
Your child can now delete their user account directly in the Gimi app.
How to delete a parent user account
Go to Settings in your parent account.
Select Bank accounts.
Tap the red trash can icon next to all connected children’s bank accounts.
Go back to Settings and select About me.
At the bottom of the page, tap Delete user account to delete your account.