SEO Title and Meta Description not showing on CPT’s

Hi

I’m having an issue with SEO Title and Meta Description not showing on my custom post types.
My CPT’s are made programatically in a custom theme (I have no issues on other sites built with the same theme). From other support threads I’ve found that others have had issues with having ‘has_archive’ as a string instead of true, but that issue should have been fixed in a previous Yoast version.

I’ve made sure that the CPT’s actually have SEO Title and Meta in Yoast and they all do.
The screenshot below is from one my CPT’s.

If I view page source I only see this:

Have I missed something totally obvious?

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