Thank you for the clarification.
I'm having the same problem too.
I read the link provided by you which explains APP Distribution Guide. As an End-User and not a Developer, it sounds logic to me but just only to some extends.
Now I'm curious to know whether or not this is everybody's problem who has upgraded his/her iOS device to iOS 9.0. If it is caused by Apple's new method/policy through which the apps are being distributed from AppStore to devices, then this problem should exist on every single device which has been upgraded to iOS 9.0, then I expect this forum to be flooded by users having this problem or at least to see some feedbacks on the web, i.e. on Yahoo or etc, but I find almost nothing when I search for it.
I tried to ask this question from Apple's Support but my device coverage was finished. I would like to ask from this thread's participants who are still under support coverage to open up this issue with Apple to see whether or not this is a bug or caused by new Method of APP's Distribution.
Thanks in Advance.