Facebook Page Plugin is not working - only for one site

Question

I have integrated the page plugin in my directory.

ruhrlink.de info.php?schluessel=150991 dont work, others do.

When I enter the web adress manually in the devel

Answer 1

The page has some sort of access restriction set. The page plugin only works for public pages without any restrictions.

https://developers.facebook.com/docs/plugins/page-plugin#privacy:

Privacy Restricted Pages
Facebook Pages with privacy restrictions cannot be embedded.