HockeyApp: Install dialog doesn't show

Question

I'm using HockeyApp to distribute my app among some testers. It worked fine but since a couple of version, they are not able to install the app as they used to. They don't get this prompt:

Did anyone face the same problem?

Answer 1

Hockeyapp support said that it can happen if the tester installed the App Store version of the app. Solution: uninstall and install again from Hockeyapp.