Do not try to install an app from iTune because it will reset your idevice to 0 And it will fail to install your app
I've read about Apple having outages. No idea if that's related. http://www.macrumors.com/2016/06/02/apple-app-store-icloud-outage/
When you go to app tab, search for " lost sock" Click install and then it will say will install- and it says that I had 50 gb out of 64 free