Accessing Microsoft Teams using organizational or personal credentials
Have had about 11 people at my company report the same issue. Seems Teams ver. 2.0.17 is the common factor here. I have an iPhone 7 which is for testing that had iOS 13.5.1 on it and Teams Ver. 2.0.15 with no issue. Updated to iOS 13.6 and still no issue. Updated Teams to 2.0.17 and started having the crashing.
I've tried the steps from Jino59 with no success.
Reinstalling the app doesn't have any affect either.
I noticed however that I will still receive chat notifications on the lock screen of the phone, so the app is still running in the background. The main UI just won't stay running. I can even launch the app and leave it along and 2-3s later it closes.
Hoping we get an update from Microsoft on this.