You can view the statistics of your previous Facebook posts at our platform. Herto, open the desired campaign and click on the left menu at "Your Facebook Postings".
All published articles are shown here among each other. The latest one is at the top. The statistic updates itself each 30 minutes on the right menu. Likes, comments and shares.
You can start the next placement of Promo Ads here, if they are available.
More information about Promo Ads are given in the article "Placement of Promo Ads".