Why doesn't the mob application start on android 9, but it works fine on android 9PKQ1.18097.001?

Question

Android

When launching the android 9 application, a screen with a constantly
running preloader opens When launching the application on android 9PKQ1.18097.001, an authorization form opens

Answer 1

I like questions like this... What app, what device, what preloader... What kind of answers do you want to get with this way of asking questions?