My apps have disappeared and I cannot re-download them/download new ones.
A lot of my apps have disappeared (iOS 7). At first, the only problem was that I couldn't download apps becaue whenever I tried to, it would say 'open' in the App Store but that wouldn't take me anywhere and the icon wouldn't be on my homescreen. After I turned on and off my iPhone to see if this would resolve the problem, I noticed that a lot of my apps had disappeared. I cannot re-download them as it says 'open' and not 'free'/'buy'. When I press open, nothing happens. What do I do?
iPhone 5s, iOS 7.0.4, Problem occured after restart