My Facebook app has disappeared

Question

My Facebook app has disappeared. It still appears in the purchased section of the my app store with status OPEN but when I click on OPEN nothing happens.
I have restarted my iPad, restored settings and still no help. I was also advised to cable link the iPad to my laptop and in iTunes remove/delete the Facebook app, then re purchase it. When I tried to remove it I was shown a message saying, this will not be deleted from your IOS device.
Yes eh I can still access Facebook from Safari but that defeats the purpose of the app which gives me notifications immediately.
I am really keen to find the Solution.

Answer 1

You do not want to do the Delete/Redownload the App from/to your iTunes Library - you want to Delete/Redownload it from/to your Device. When you hook up your device to iTunes, click on the device, then on the Apps tab to the right in the Device Profile Screens (not on the App under Apps in the Library).
You should see a little box next to the App that says "Remove". Click on that. It will then change to "Will Remove". Sync your device to remove the app. Then eject the device, check it to make sure the app is no linger listed with "Open" next to it. (depending on your display options, you may still see it but with a little Cloud next to it, or you may not see it listed at all).
Plug the device back into the computer, and select it again. Then, under Apps in the Device Profile, see if the little box next to the App says "Will Install" If it does, then sync to reinstall it. If it does not, click on the box until you see the "Will Install" option and then sync.
Cheers,
GB