Pro sites plugin not displaying Premium Plugins

I installed the plugin and created one membership level, I have several plugins installed but they are not showing in the dashboard plugins list. When I click on “Premium Plugins” in the Pro Sites dashboard menu/links no sites or plugins are shown and there is nothing shown for a minimum level.

When I click on “Premium Themes” I have my one theme listed with the minimum level showing as the level I created.

So, what have I missed? Is there a detailed manual available for this plugin?