[2020] GW2 App authenticator constantly not working

The issue of needing to wait a little while to use a two-factor auth code should be resolved. Please let us know if you still have any time-based issues with two-factor auth.

Just in case, I'll also remind anyone who altered or removed two-factor auth from their GW2 account that if you want to re-enable it, you also have to reset/re-synchronize your mobile app's code for GW2.