Yesterday, I ran into big problems with one of my gmail accounts and Thunderbird. Suddenly I could not log in. I got a pop up window saying something like I need to log in via google put the NEXT button would not work. (Or any of the other clickable links). After 2 hours on the phone with google we could not figure out the problem. I tried all of the suggestions I could find online including changing security settings, etc. I even changed my password and ended up deleting the account from TB. I tried again last night and then after no success, changed by sign in option to normal password instead of OAuth2. Suddenly it worked! But now I keep getting the gmail pop up window about my password whenever I send an email. The email still goes out, but I have to close the window every time. SO what is going on? I am thinking it has something to do with the OAuth2 password needing to be cleared, but even after I deleted it in passwords, it still didn't work. BTW, my other gmail accounts work just fine in TB. Please help.