How To Enable Two-Factor Authentication (2FA) using an Authenticator App Click/Tap Settings.Click/Tap Enable 2FA with Authenticator App.Scan the QR Code with the Authenticator App. If you are encountering any issues when scanning, click/tap Unable to Scan? so you can enter the code manually. Enter the 6-digit code generated by the Authenticator App in the space provided. Click/Tap Submit.