Why my Facebook Feed doesn't update

Please note that your Facebook Feed widget may not immediately display new posts from your Facebook account. This delay occurs because our widget uses cache to enhance loading speed and reduce server load.

Rather than requesting data from Facebook each time your page is accessed or refreshed, the widget requests Facebook once every 6 hours. Then it stores this content in the cache and displays it from the cache. 

After the cache is expired, the widget requests Facebook for the posts again, and that’s when the updates make it to your widget.