Hi Paul,

I just make your ticket to "Private". In next time, please don't show your admin information in publish ticket - let's use Private ticket.

1/ Please install & activate plugin Yoast SEO.

After installed this plugin, go to admin page > SEO > Social > click to "Facebook" tab > make sure "Add Open Graph meta data" is enabled.

2/ Please go to Customize > Social Media Options > fill any social media options you have here - like the facebook social working now.

If have any social media you don't need, let it blank.

3/ Please check options for it in Customize > Single Options.

Best Regards,

PenciDesign