If the modules are reporting that JFBConnect is not enabled, it likely means the JFBCSystem plugin is not enabled. There are various plugins that need to be enabled for most JFBConnect features to work. Check that our User, Authentication and System plugins are enabled as those are the primary ones. The JFBConnect Autotune tool should also call out any plugins that aren't enabled that need to be.
I hope that helps, but if you need anything else, please let us know.
Thanks,
Alex