Publicize Errorcode: -10520

Hey guys,

this is my website: http://www.ciaodigga.com and it contains a fresh WordPress and Jetpack installation. I haven’t started publicize since today, now when I try to connect to the facebook service, the page takes a bit longer loading the action of the connect button and then I get this message (german):

Fehlercode: -10520

Basically errorcode: -10520 – now I don’t know what to do. Wheres the problem?

I hope you guys can help me …