Is it possible to use oauth with a G Suite google account? My email address doesn’t end with gmail.com and it doesn’t trigger the oauth flow.
The thunderbird instructions are using a password, google is phasing out support for using passwords instead of oauth.
Oh that’s bad…
Enabling oauth2 in android alone took us months and we only got automated/template emails back from google.
Maybe try logging into gmail.com server, but using your full email as a login?