Manage My Health patient portal mobile app will soon be back up and running but with a few changes on how to sign in
They will be introducing mandatory two-step verification across both the mobile and web versions of Manage My Health. You can read more about it here. – Mobile App Relaunch And Mandatory Two-step Verification | Manage My Health
If you have any issues, contact their support team via the page linked above or talk to one of the team at Lyttelton Health.