Similar to the recent URL switch to cognito in the Hive API, it seems that the Hive interface has changed again and is now using AWS SSO. Certainly my HA installation can no longer communicate with HiveHome. I have some independently developed code (Tasker on Android) which has also broken.
Tracing some of the hivehome.com network calls, it certainly seems like the login process has changed significantly. I wonder if anyone has any insight into how this can be made to work again.