Vacuum is great, app is annoying. It keeps deleting the rooms that I set up every couple weeks. Also, after the robot vacuums and docks, I have to exit the app for the menu to reset so I can start the vacuum again. This app needs some serious work. OnePlus 7T, Android 11 updated 10/1/2021, app updated 10/20/2021. Update 2/27/22 - changed from two stars to one star. App is still deleting rooms, and now the room editor crashes.