2fa Authentication Fortnite Not Working - Fortnite Gaming. If you already have the app youre supposed to click on continue and then a new QR code appears and that one is the one that allows you set up the 2-step authentication. Depending on your phone click Additional settings General settings System.
The two options available are email authentication and the authenticator app. If your 2FA code does not function properly it might be the result of one of the following causes. For 2FA to function properly the date and time on the device on which you are logging in to ProtonMail must be exactly the same as those of the device where you receive your 2FA code.
Go to phone settings.
Choose the authentication option youd like to use. 2 Mixing up multiple 2FAs. If you have access to your 2FA codes but are receiving an Invalid login message please update the time settings on your phone from Manual to Automatic and ensure the correct code is being used. If you are using Android.