Itunes App not functioning

I recently performed a restore on my iPhone 6 plus. My Mac Book Pro OS X El Capitan 10.11, My Iphone is running 9.0.2. When I use Itunes to install apps to my iPhone, the window to the left that displays every app ever purchased that has a tab that indicates the status of your purchased and if you would like to install them to your iPhone. The window to the right of the Apps that is supposed to mirror the display of your iPhone and the apps you have installed. This window when I connect my iPhone to my computer just displays a continuous gear.