kris_IV on "[Plugin: Facebook] App ID always empty..."

I think a lot about it and try do it 100 times. Maybe is possible to write this APP ID and App Secret in file manually? But where this plugin keep this information? I really don't have idea... I look in FTP client for this and app_id and app_secret is very popular phase....
I'm sure that my key are correct - I tried it in another plugin and everything work correctly...