Please make sure that the 'Social Profiles - Kunena' plugin is enabled on your site.
If the plugin is not present, it means that you probably installed JFBConnect before Kunena. In that case you can 1) reinstall JFBConnect and we will automatically detect Kunena and install the plugin or 2) manually install the plugin which can be found when unzipping our installation package. If you have to reinstall to get the plugin, you will still need to enable it as well.
-Melissa