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Setting up TB with an additional gmail address has 400 when doing oauth

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I am having problems setting up an email account in TB. I already have ONE gmail account setup and it's currently sending/receiving fine. However, when attempting to setup my 2nd acct, I'm getting: 400. That’s an error. The server cannot process the request because it is malformed. It should not be retried. That’s all we know.

I can't for the life of me figure this out despite comparing both accounts' SERVER SETTINGS repeatedly.

I am having problems setting up an email account in TB. I already have ONE gmail account setup and it's currently sending/receiving fine. However, when attempting to setup my 2nd acct, I'm getting: '''400. That’s an error. The server cannot process the request because it is malformed. It should not be retried. That’s all we know.''' I can't for the life of me figure this out despite comparing both accounts' SERVER SETTINGS repeatedly.
Attached screenshots

Modified by Wayne Mery

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