Thanks for the credentials. The problem was that you did not enter your Facebook application ID and secret key into the JFBConnect backend > Configuration > Facebook area.
I published the SCSocialWidget module for Super Users and logged in on the front-end. When I attempted to use the link to pop up the request window, I received the following error:
Once I added the app id and secret key, the request sent out properly to the user.
Notification area:
Navigated through the Games side menu: