I managed to achieve the list of children's applications on the parent device. But I can't manage restrictions for these applications. Is it only available from the child's device or there is a solution for the app management from the parent's app?

I'm using Xcode 12 with iPhone 12 Pro. Everything worked fine on iOS 14. But after I updated my device to iOS 15 I’m getting the app's splash screen for more than a minute every time I build the app. I've also tried to use Xcode 13 with the iOS 15 device, and it also seems to be broken!  Moreover, when I use a breakpoint and it stops I need to wait for 30-50 seconds to step over or to continue program execution. Does anyone have these problems too?