Mind if you select YES your address (or P.O. Box), tel. nr. and email address will be displayed in the App Store, at least acc. to https://developer.apple.com/help/app-store-connect/manage-compliance-information/manage-european-union-digital-services-act-compliance-information/ If you do not want that , NO is a good option. But when you publish a payed app, or at least one with a payed option, you probably have to select YES, although this is not explicitly clear, especially if you are just a hobby programmer "trying out" in-app-purchases. I have a non-payed app published and was considering to try out in-app-purchases, still rather as a hobby and as a learning activity. However I now doubt to start with that, I do not want my personal address published. Also, you never know which burocratic further demands will follow, (and all that because of a hobby where maybe only a friend pays once $1.99 for an in-app purchase.)

Thanks Timo23, your idea completionHandler([.alert, .badge, .sound]) pushed me in the right direction that it has to do with the characteristic of the banner. Although it did not really work to start with: I changed .banner to .alert but the notification still came as banner disappearing after some seconds. In the end I found out that my app has the following Settings page : Tapping "Notifications" brings up following page: where you can set the "Banner Style" to "persistent". Now the banner does not disappear anymore. One little disadvantage: the user has to perform this action, I have not found a way to do it programmatically.

I only cited a part of the code here above, which is in the main App swift file (The creation of the notification is, as usual, in another file). I cited this part, because I presume, but do not know, that it has something to do with launchOptions or completionHandler. Hope someone has an idea.

I have found a way to retract holidays from the stock apple calendar (via EKEventStore().events(matching: mypredicate)

I don't know why, but the Appstore now shows the 3 screenshots.

I just got the "credentials" error also in the original location, so it did not have anything to do with the location. I solved the problem in that I quitted Xcode and started it again. Then everything worked again, including "distribute".

In the end I found out that SwiftUI is only supported from Xcode 11 on.