I have a big problem with updating my apps in the App Store. When I install an application, it doesn't appear as installed as you can see here:
I have all of these apps installed on my computer, and I installed Telegram for example just right now and even that is does not appear as installed.
So I can't update any of my applications, and this forced me to install all of them again!
As you can see, it always shows "No Updates Available":
I'm sure something is wrong with my Mac App Store, I tried to delete the App Store caches but that doesn't work. How can I fix this?