I had the custom component working, but when I saw the new integration in 2025.9 I updated, uninstalled the custom component and tried to setup the new native integration.
However, after reading all the docs, and trying multiple times with various Home Assistant remote/local access URLs I have not been able to get the integration to work. If I disable all remote access and Nabu Casa when trying to add the integration I still get a https://hooks.nabu.casa/xyz webhook URL even though the Docs says I should get an Internal URL.
The Integration shows up in HA but all entities show "Unknown." I added the Webhook URL to Sleep as Android and ensuring all the Events are turned on. When I do anything with Sleep As Android like start sleep, set an alarm, have the alarm go off, Home Assistant doesn't receive any updates and all entities stay "Unknown"