Facebook has decided to retire API endpoints without warning to anyone on April 4th, 2018. This affecting parts of our plugin Feed Them Social. It will no longer be possible to display feeds from Groups at this time. Facebook has effectively cut off these feeds from working. We may be able to regain access to them through a new app process which may not be in motion for several weeks.
We apologize for any inconvenience and also for not being able to give you any prior warning to this happening due to Facebook not giving us the opportunity. Please know we will be diligently working on improving Feed Them Social to adapt to these changes if and when they become available.
You can read specific details about the changes here: https://developers.facebook.com/blog/post/2018/04/04/facebook-api-platform-product-changes/ and here https://newsroom.fb.com/news/2018/04/restricting-data-access/
UPDATE (April 9th, 2018): Facebook Events: It is now required that you use a page access token. The page access token must be for that facebook page for it to work. An APP ID will not work anymore. Posts for a specific event will not work though since FB retired that endpoint.
UPDATE (April 19th, 2018): Facebook Reviews: The profile link referencing the person who left the review have been removed from the API due to privacy changes. We will be updating our plugin accordingly in the next week.