Occasional user here. Got a notification about a room. Loaded the app and no rooms opened - red error. Logged out and tried to log back in - gave me a red error saying that I need to upgrade. (Why not tell me before logging out?!) Upgraded and tried to log in - required a code via SMS. Didn't arrive after multiple tries. Finally arrived - pasted the code and it was wrong. Then it said only 3 tries allowed. Finally it said that my number does not exist or is unsupported. Can't say I didn't try!