Since updating to iOS 15 Beta 3 (19A5297e) on my iPhone and on my iPad as well, the Microsoft "Power Apps" application (ver. 3.21071.22 and 3.21072.23) will no longer start up. I tried deleting the app off my iOS devices and reinstalling, but still it will not work. MS Power Apps worked fine in Beta 2, i.e. ver. 19A5281j.
I just want to confirm this is a general issue and not a "me" issue?
I just tried it again..... I finally get "into" the app, but now I'm stuck in a Microsoft authenticator loop trying to log in.
I'll continue to try.