@robert681
I completed your fix and it worked to allow access back into the plugin settings. Our main settings were reset either via the plugin update or the temporary snippet addition, so I had to force 2FA again for all individual users, though I’m not sure yet if everyone is going to have to reconfigure their 2FA.
The same thing happened to us.
When I logged in I was prompted for the 2FA setup. Since I had already completed it previously, I dismissed/cancelled the setup thinking it was a hiccup. After that, I can no longer log in without a backup code and cannot access the 2FA settings at all (same error as @7thcircle posted).
I will try the fix and report back.