I had some of the same questions and also didn’t know if my rain sensor was working with my newly installed b-hyve unit. It has been raining for 24 hours where I am so I know my sensor has been thoroughly soaked. I tested by verifying that the sensor showed SENS ON at the unit. I then created a program to start and run for five minutes. The app indicated that the program was running. The timer was counting down. The sprinkler heads did NOT pop up. The screen on the b-hyve showed SENS. I believe this indicates that it was actively overriding my program although the app showed no indication. It seems that the system is working correctly although the app just doesn’t show when a program is being interrupted. Hope this helps.