You can download the previous app version and don’t need to mess with the beta thing. I downloaded V2.45.0(342) from "https://wyze.en.uptodown.com/android/versions”. The whole process was pretty painless. Now I have working bulbs again. The downloaded file is in the Android “APK” format and is easy to install. All Samsung phones have a built-in APK installer; make sure you have “Install unknown apps” checked.