Enough crashing

1) The app says it has 4 modes that includes single room. I don’t see the single room mode, and; 2) I’m having difficulty trying to add a room. I thought it may be it needed to run through a cycle with the app first. But when I try to add location it says no room added, add a room now. There’s no add button available in that screen. Otherwise it seems to be working pretty well. It does have problems with the area rugs as I’ve seen from a couple other reviews. Any help?