When I left town I activated a rule to notify my if there was motion dected on my motion sensor. What I didn't realize was that the motion sensor had been disconnected for 2 weeks (dead battery)! This points out several items that could be improved in the app:
1. If I activate a rule that requires a device that is not connected, it should tell me right then, so I know I need to figure out why.
2. If any devices are disconnected, there should be a badge notification of how many devices are offline or have low batteries. I can't swear that I didn't get a push notification when the device went offline, but if I wasn't home to do something about it, or if it got buried in a bunch of other push notifications, I might have not realize or forgotten it.
3. When opening the app it should readily have a screen with any issues (disconnected devices, low/dead batteries). Going to the devices screen on the app you can see a red dot indicating a device with an issue, but it should be front and center when starting the app.