RSS Feed

Having some issues with RSS feeds in the WP Knowledgebase plugin.

Got WP installed within a LAN environment
the URL is:
http://server-name/knowledgebase/

when I use URL to access RSS feed I see no articles..
http://Server-Name/knowledgebase/?feed=rss2

IS there anything I have to enable for the plugin to update the RSS feed with new articles ?

https://wordpress.org/plugins/wp-knowledgebase/