To use an authenticator app go through the following steps:
Download a two-factor authenticator app like Microsoft Authenticator for Windows Phone, Android and iOS or Google Authenticator for Android and iOS.
Scan the QR Code or enter this key into your two factor authenticator app. Spaces and casing do not matter.
Once you have scanned the QR code or input the key above, your two factor authentication app will provide you with a unique code. Enter the code in the confirmation box below.
Put these codes in a safe place.
If you lose your device and don't have the recovery codes you will lose access to your account.
Your login is protected with an authenticator app. Enter your authenticator code below.