Facebook Feed Stopped Working

Hello,

We have been using your wonderful product for about a year now. Within the last week, it quit working and now I get the following error:
#100 – This Page may not be public. Here are some possible solutions to fix the error.
I went through your checklist and verified everything. Our page is public and every post is public. I have uninstalled and reinstalled the plugin twice now. I have also revoked access and then gave it permission again. Still not working.

If you have any ideas, I would appreciate it.
Thanks!

The page I need help with: [log in to see the link]