Gmail's backup codes are useless to access account
Ok, I have a work account on Gmail. Having the experience of being locked out of Gmail previously (endless loop of "You are entering the correct password but we're not sure that it is you, try again later"), I created a 2fa via Google Authenticator and set up Backup Codes and thought I'm safe from them asking me to sign in on another device or enter sms code (I don't carry that phone with me). So, one sunny day I decided to add standard iOS mail app to this account, and lo, an hour after connec