I need to change my Facebook id. Everyone has 15 characters more than mine. Thanks for help.

I am not sure I understand your post, why would you need to change your FB id?

@Aykut-Dino Once you game is linked to a Fb account your fb id become your game id and this cant be changed

you can see your game id from setting by clicking on the gear icon in the upper right corner , but this has nothing to do with characters length !