Every time I create an App Password for SourceTree I am able to login. For a few days it will work fine any time I want to commit or pull. Then one day the password just stops working.
It is always when I first try to do something that day but it seems to happen every 5-10 days.
I have gone through this cycle of creating a new App Password for SourceTree about 8-10 times now since being forced to switch.
It is a real PITA.