Google Popup Sign-in from T-0Bird links to a *ghost*/ disabled gmail account

1] the account in the pop-up window hadn't been disabled over a year ago, OR
2] I could change the account in the pop-up to one I still have (can't) 

I use T-bird for my email accounts and have for decades. This includes accessing an enterprize version (work) as well as basic personal gmails and even another non-google web based email account. I'm an ardent fan. I recently had to reinstall on wiped/cleaned laptop (workplace IT situation). Since then, the 2-factor authorizations have been creating problems. Including: a pop-up whenever I open T-Bird on my laptop, requiring me to sign-in to a ghost Google account. This would be less of a problem if either: 1] the account in the pop-up window hadn't been disabled over a year ago, OR 2] I could change the account in the pop-up to one I still have (can't) 3] PS: yes, my settings for my other google accounts are at SSL/TLS & OAuth2 (except for the one that requires 4]PPS: No, the ghost account is not listed as one of my 6 accounts in T-Bird, and it was deleted long before I had to re-install T-Bird on the newly wiped hard drive... 5] I cannot log into the ghost account and disable the 'sign-in with google' option, because it's disabled/shuttered/NoLongerLive. 6] Yes, I've cleared the cache. Multiple times. 7] Yes, I've updated to the most recent T-Bird (158.0) The popup only happens with T-bird, and only on one laptop (ot others I use, which also have T-Bird). I really don't think this is a problem at the google end, much as I'd be happy to blame them. *MY QUESTION*: Where would T-bird, supposedly a fresh install on a recently wiped drive, be pulling the ghost of a previous account as part of the 2-factor authentifications, from? Would it be in the Config Editor? Bottom line: How can I make it stop?