Suddenly iphone 5 is not compatible to install in app-store

This is the scenario:


We release updated version apps without changing any compatibility devices or architecture in build setting,


and it can be installed with ad-hoc version to iphone 5,


after some test by tester we submit to review to appstore,


test again using testflight and successfully installed to iphone 5,


the application got accepted by appstore review,


release the application,


try to install using all mobile device type,


and just iphone 5 can't install the apps (previous version is able though),


it said "this app is not compatible with your device",


is there anything we missed on the news?

because suddenly can't be installed without any changes in device compatibility.

Which version (and build #) iOS on that iPhone 5?


What is the app type/category?

Suddenly iphone 5 is not compatible to install in app-store
 
 
Q