Facebook SDK 6.2.2 for Unity doesn't work on my Android Device

i dont know what the hell is happening .....my program works just fine when i am in Unity Editor but everything messes up when i build it to my Android Device.....The Login Button doesn't even respond ..........i have the latest SSL installed and all setup ......i do have a keyhash displaying in Facebook Settings and everything is all setup in developers.faebook.com too...Plzz help anyone....