If you lose access to your multi-factor authentication device or email address, you can use one of your backup codes to access to your account.
TIP: You may have saved your recovery codes to a password manager or your computer's downloads folder.
To use one of your recovery codes and automatically regain entry into your account, click on Don’t have access to device on the verification code screen.
Enter an unused backup code and click Continue, you will then be logged in automatically.
Info: Once a backup code has been used it is consumed and be used again.
If you have lost access to your backup codes then follow the Account
Recovery process by clicking on Lost access to backup codes.