Not working

Can’t get this to work. I’m trying to use it as a widget but get the message “No Facebook Feed to Display
Check Your Settings.”

I believe I have the ID right. This is the page https://www.facebook.com/pages/The-Fitness-Hub/277372705621954 and the graph link using the ID https://graph.facebook.com/277372705621954.

I put the ID into the widget but it comes back with that message. Am I doing something wrong?

https://www.ads-software.com/plugins/wp-facebook-public-page-rss/