In order to post my k2 item automatically, to social network via rss feed in category i created an additional category sort of a master category (latest news) that contains all my published item from all category I have enabled rss on both the global parameter settings and on all the category, but the rss feed is not working.
1.Please forum can you help me with the right configurations in order to get my rss feed displaging.
2. Or any free module or plug in for rss feeds and auto social share
thank you.

The feed is the default one generated by Joomla!.
/menu-item-alias/?format=feed