Cant sign in into Xbox App

Hi, since this takes over and is very depressing i need to open a thread here.

My Problem is the following: I need to login into the xbox app into several accounts a day. Once I enter the E-Mail it asks for the password, I enter the correct password and then it asks about windows Hello, I always chose to just use it for this app and then click on proceed. But then it ALWAYS kicks me back to the "enter the password" screen. The password i entered is correct. I used to get around this error by deleting ANOTHER account in the windows account settings, closing xbox app, then trying to sign in, then it worked. But now, as it was before, it doesnt matter what I try, It doesnt matter wether I delete ALL Account from the Microsoft Device or try a new account. I simply cannot login.

I always get kicked back to the enter password screen.

What ive tried so far:

-reinstalled xbox apps

-went into services.msc and made sure all xbox related services are running

-updated my device to the latest update

-deleted all accounts from windows 10 and tried to login again

-repaired xbox app

Im at the end of my patience. I simply dont understand whats causing the issue nor do I know how to fix it. I hope you can help me here.

https://imgur.com/a/RjMsWvH

After the second pciture, it returns to the first picture...

:)