TMR said to give it time as the load was higher than expected and some teething issues with the servers are messing with the rollout. Its a government body so the server and bandwidth will be the cheapest tier possible and the app developed by the lowest bidder, so give it time.

Basically they specced out the backend for the load it would expect when the system is in place and in use by the steady state number of users, not for the initial influx of thousands of people trying to set it up at once. rookie error for app service rollouts, but a common one with government services.