I've noticed that I can't purchase anything anymore using my iOS 9 devices, and I got reports from multiple customers using iOS 9 devices that they are facing the same issues.
Does anyone know what's going on here? In my case it tells me to accept a new license agreement, opens the AppStore and shows a blank page. Using the same apple id I can make purchase on newer ios versions (without getting any license agreement confirmation dialog)
For my customers they get a blank page when confirming the purchase (also in the AppStore dialog).
This is a real issue for me since the Apps I'm distributing are for professional/industrial usage where long device lifetimes are common. Actually my top 4 downloads platform version is still iOS9.
Here are some screenshots:
