You likely don't have the Social Profiles - JomSocial plugin enabled. That should have been installed with JFBConnect (if JomSocial was properly detected), but we don't automatically enable it.
As Russ mentioned, you'll need to change some settings in the Configuration - Facebook Connect area of JomSocial and also in the Profiles area of JFBConnect (once that plugin is enabled).
I hope that helps explain, but if you do have other questions, just let us know.
Thanks,
Alex