Trust this computer keeps popping up every time I try to sync
I have a iPhone 6 iOS 8.3, Macbook Pro and iTunes 12.1.2.27 and am having an issue with sync.
In iTunes I can see my iPhone, but every time I try to sync a popup saying - Sync failed due to this computer is no longer approved for purchased apps on this iPhone?
I then approve the computer and it states that I now have 3 out of 5 approved computers. I then try to sync again but then the popup comes again?!?!
Am I missing something or is this a bug?
Any help is appreciated and thanks in advance :-)
iPhone 6, iOS 8.3