I have a client on Windows 10 not connecting to Nextcloud. After typing my username and password, the button for granting access appears. But after pressing it, I face the login button again. I tried to use a App-Token, ending up in a 405. I have several iOS, Andoid, MacOS and other Windows 10 Clients, all working well. I can log in via Browser (Firefox), and i can see every login attempt in the security tab in the preferences. I am confused and decided to ask if anyone has an idea what is going wrong here?