I use gmail and Thunderbird. Everything has worked for several years. A few days ago I changed my Gmail password. I am able to access my mail via gmail's web interface using this new password. When I start up Thunderbird, it opens a window asking me to sign into my Google account. The screen has a field for my email address which is pre-populated with my correct email address. It also has a "Next" button. Upon clicking the button, I expected to be taken to a screen which asks for my password. Instead, my email address is deleted from the field and replaced with "Email or phone." OK, I re-enter my email address and click "Next" again. The same thing happens. I try my phone number and get the message "Couldn't find you Google Account. Try entering your email address instead". Note - the phone number is correct and linked to my Google account. I used it to change my Google password which of course led to this problem. Also, after experiencing this I tried notifying Thunderbird of my new password via Options > Privacy and Security > Saved Passwords... In this screen I changed both incoming and outgoing passwords to my new Gmail password and retried. Same exact experience. Next I went back to this screen and deleted both passwords and retried. Same exact experience. Please help. Thanks.