I have the Companion app on an Android phone. I have that app set to both my internal HA URL, and my Nabu Cassa URL. I have automations that send notifications to that device. I noticed that it was using my 500 daily allowance, which should not be happening, as the have set the notifications to send at a different rate when at home vs away. It appears that with my new phone, it is not receiving notifications via my internal network.
In order to test this, I have set my phone so that it has not got mobile data, and cannot access the internet through my wifi, it can only get to the local LAN. I can use the companion app to connect to the local HA instance, and to turn off/on lights etc. But if I try to send a notification to my device, it does not arrive. Indeed, the notifications are going via Nabu Casa instead of staying in the local network. This is a new phone. On my old phone, when I was home, notifications stayed in the LAN, and did not use up my 500 notification limit.
What should I look at to see why Home Assistant is now sending notifications only through the internet?
Thank you