This issue is not a GOS issue, it is a government issue, I have another mobile with Android 9 last updated in 2020, and the Service NSW app worked until till recently, then recently stopped with this statement below. Just for the record, older version of this app are affected as well.
โIt looks like your device may be using non-standard software
For your security, you will not be able to log in on this device.
You can still use other features in the app which don't require log inโ.