If you really want to completely remove your account from AllClimb, you need to go to the settings menu in the app:

Then choose "Account Details"

Click the "Delete Account" button. And enter the password that you set when creating this account.

ATTENTION! When you delete your account from the system, ALL DATA related to your profile will be deleted. Information about your username or email, a list of sectors you have downloaded, all the sends you have submitted, comments you have written, and stars you have given.
This action CANNOT BE UNDONE!