so ever since last week, I can not push or pull to bitbucket cloud anymore.
We have a paid plan, and I log in via browser atlassian ID/MFA with a hardware token.
But still, every time i try to push or pull after a fw seconds I get this error

After that, its usually asking me about basic credentials. If In put in either my account password or app password, i get the error 'invalid credentials'
I am using the latest version of sourcetree for windows and when i authenticate via oauth it takes forever, but in the end it states "Authentication OK", but the issue persists.

I also tried some other things I read here in Forums, like deleting all my bitbucket entries from windows credential manager:

But to no avail. Any Ideas which steps I can try? Right now I basically can not interact with our repos from windows at all.