Okay it's been a very strange day. I decided to log in using my other Google account that did NOT have the 2 step verification. Logged out and logged back in with my main one that does. Lo and behold the short code sms came thru.
I dunno, maybe the Tmobile techs that I spoke with earlier resolved something on their end. Or my method actually did something. Or something else happened on Google's end. Either way I can finally move on with my phone. Thanks & have a great weekend
Glad to hear this worked for you! I'm not sure if it was resolved by our tech team or by your steps, either - but it's definitely nice to hear you're not missing messages anymore. Maybe at some point another user with the same problem will pop by and test your Google account switch resolution and let us know if this was the fix! Thanks for posting the update.