Your Community Account is also a regular TeamViewer account. Therefore you can delete it in the TeamViewer Management Console. Please check this article for further information: How to delete your TeamViewer account
All the best, Esther
Did my reply answer your question? Accept it as a solution to help others, Thanks.
Thanks Esther, but:
My regular / first account for Teamviewer uses the same email adress - and that's NOT the one I'd like to delete.
I'd like to delete this "Steve4" community account (which sadly uses the same email) but another user name (besides, the TeamViewer(Management Console) does not use a pseudonym user name)