[dmdsoftware]

How are you inputting the "OAUTH2 code" into the plugin?

Copying & pasting the results/data from my browser and directly into the settings.xml file (as plain text).

When you go back into the settings.xml, and navigate to your entry for that account, do you see a gdrive#_auth_access_token and gdrive#_auth_refresh_token?

BTW, you can have multiple accounts defined for the same "account", so that you can play with the various login types. I have 6 accounts defined in my plugin, 4 are the same Google Account, but I have the 4 repeated across logins but using the various account types, so I can test each without having to change my settings each time. The "username" only really needs to be your username for the client login type -- for the others, it isn't actually used when talking with Google. Hope that makes sense.