In the event that you lose your authenticator device and/or cannot access your authenticator app, you can log in using your backup email. This is the email address that you added when setting up two-factor authentication for your account.
To log in using your backup email:
On the login screen, select the link under Can’t access your authenticator? to send a two-factor code to your backup email address. You can update this address at any time by selecting the Change settings link in the Profile section.
To change your login device:
Once you’re logged in to your account, select the Change settings link in the Profile section to update your login device. Simply select Change to scan an updated QR on your new device, then click the Save button.
Learn more about two-factor authentication in our Account Management guide.