If you picked up a new phone, you will need to restore your Duo account to the new phone before you will be able to sign in using two-factor authentication. If your app isn’t working as expected, you can also use the restore to reactivate your device.
Check out the OIT Knowledge Base for step-by-step instructions for restoring Duo to your new phone.
Need Help? Submit an online request through the new service portal or contact the OIT HelpDesk at 865-974-9900.