https://support.my.uq.edu.au/app/answers/detail/a_id/2717
Write or print the passcode on a piece of paper and keep it with you. When you are prompted for MFA, select 'Other options, then 'Duo Mobile passcode' and enter your temporary passcode. Register another device for MFA. While in the MFA Management portal, under 'Device management', select 'Add a new device' and follow the steps.