Please try to re-install JFBConnect. JLinked is slightly older than JFBConnect, and installing it after JFBConnect can actually downgrade a few files, which could be your problem.
My guess is that should fix things, but if not, let us know.
Finally, all social networks have some restrictions on IP address based sites. You will likely run into multiple issues until you get it on an actual domain name, which Facebook and others give a lot more 'trust' to.
I hope that helps,
Alex
Installed, had buttons for FB and lIN, config'd now nothing
