ITunes Not Sync iPhone After Using PP Assistant?

I'm using iPhone 5 (Non Jailbroken).
& using PP Assistant for downloading apps. But problem is after using PP Assistant, iTunes not sync my iPhone. If anybody using PP Assistant then please help me.
Is there any solution?

Return it

Check these problems and solutions and workarounds it will help i suppose your issue is listed
http://wizdroid.blogspot.com/2013/11/iOS-7-Problems.html
http://wizdroid.blogspot.com/2013/11/ios-7-problems-p2.html
http://wizdroid.blogspot.com/2013/12/ios-7-problems-final.html