How to decrypt Shelter/work profile without access to the app and no credentials?

I am referring to the topic How to decrypt Island / Work profile and Parallel Apps user in TWRP? After installing a work profile (via Shelter) I wanted to install a backup of my LineageOS 17.1 via TWRP. My backup did not work and resulted in a bootloop straight into TWRP again: failed to decrypt user 10. My problem is: I do not know the user 10 password and I cannot start Android again. I cannot put in the password in TWRP or access the settings like advised in the answer of firelord… stupid me. Does anybody have a suggestion? Is there a way to wipe the user 10? Any help would greatly appreciated.