Before i add Facebook SDK to my project, i added Google PlayStore Game services to my project and as you all know, before you upload the .apk file to playstore, you have to create a keystore file from player setting menu. (Google Play Services work perfectly)I did all and after then i add facebook game services such as leaderboard and share etc. FB Game service uses a debug.keystore file(which is created by eclipse and facebook game services call this) and uses key hash of it to run the facebook services. But i already have a keystore file(which i created for google playstore) and it doesn’t let me to use facebook services. I don’t know what to do about that, i tried many many ways but, i failed at all. Waiting for you great answers about it. Thanks.