If you no longer wish to have a Teamup user account, here is how to delete it:
Log into your Teamup user account on a browser, then click your avatar in the top right and choose Profile from the menu:
Or, from your calendar, click on your Avatar in the top right and then choose Profile from the drop-down menu.
Scroll to the bottom of the profile and click the link to Permanently delete your account:
You will be prompted to confirm deletion.
Note: If you are the only admin for any calendar(s) with an active paid subscription, you will not be able to delete your user account.
First you will need to cancel the subscription, or assign another user as the calendar administrator. Then you can delete your user account.