i installed the plugin but i dont now how to setup. there is no seetings what you can do or i am blind. pls show me what to do to get a comment box into my blogposts. thank you.

Same issue here... something is missing, to use facebook api you need some more information and also a setup on facebook. With the comments configurator at https://developers.facebook.com/docs/plugins/comments/ it will be easy to add comments to a page directly with code from them.

JL