Yeah, ours isnt/wasnt set up to use our Google account. This may have been a workaround for you, in your situation. But was not a fix for us. We ended up having to remove 2fa, add a cell phone as a 2fa that receives a txt message. So it seems like its specifically an issue with the google authenticatior. Or authenticators in general on shopify. Even with this workaround, it was still VERY glitchy.