If you get a new phone* or have reinstalled Duo Mobile app, you will need to re-activate Duo Mobile. Otherwise you may not be able to receive Duo Push notifications. Specifically, you may see ‘GET WORKING’ text showing next to your account in Duo Mobile app.
To reactivate your account, please go to Device Management Portal and refer to the ‘Re-activate a Mobile Device’ section in the User Guide.
* Tips: keep the Duo Mobile app on your existing device until you complete the re-activation. Otherwise, you need to get a Bypass Code first from Bypass Code Portal in order to re-activate Duo Mobile.