The iOS app disappears at startup. Consequentially I cannot use it at all. When I double click on the button to see all the active apps I can see a static bitmap (none of the clocks are moving) but if I click on the app to make it the active app it zooms to full screen and then disappears. Help, I need to authenticate but cannot use this app any longer.I have looked for startup video also.
I have used iTunes extensively for the past couple of years for watching movies and listening to music via Apple Music. I have a pretty big library collection of iTunes. Now that Catalina is coming out, iTunes is being divided into 3 apps. I know I'll get all my music from my iCloud music library from Apple Music once I upgrade to Catalina.