iTunes will not share my iTunes Library to my Apple TVs
Since I upgraded both my 2012 MacBook PRO to El Capitan Mac OSX 10.11 and my iPhone 6 as well as my iPad 2 both to iOS 9.0.2 I cannot backup either my iPhone or my iPad to my iCloud and I cannot get my iTunes from my MacBook to share my iTunes Library (Computer) to my Apple TVs?
MacBook Pro (Retina, Mid 2012), OS X Mountain Lion (10.8.2)