I had a pretty decent (to me anyway) automation set up for my entire home. One of the automations I had was that when both my wife and I set our phones on our chargers, then the house would “lock down” (ensure sensors were on and shut off lights). I wanted to ensure that this happened via a notification to my Phone. Whelp . . . they stopped working when targeting my phone directly. Notify.Notify still works though.
I’m told I still have all 300 monthly notifications available.
HA: 2021.1.0
Mobile app: 3.0.2-full / all sensors enabled
Error:
Logger: homeassistant.components.mobile_app.notify
Source: components/mobile_app/notify.py:167
Integration: Mobile App ([documentation](https://www.home-assistant.io/integrations/mobile_app), [issues](https://github.com/home-assistant/home-assistant/issues?q=is%3Aissue+is%3Aopen+label%3A%22integration%3A+mobile_app%22))
First occurred: December 31, 2020, 8:30:06 PM (104 occurrences)
Last logged: 5:35:11 AM
Requested entity was not found. This message is generated externally to Home Assistant.
I’ve rolled through Google, and these forums and I can’t seem to figure out what is going on. I’ve followed the fix for “iOS” (uninstall mobile app and re-install / check settings), and that hasn’t resolved it. So EITHER something is broke w/HA . . . or I’m an idiot with the app 
I can also say confidently that the only thing I have “changed” is that I have updated HA. (mobile app is stating that last received notification is Jan 02 2021, which was me testing notify.notify)