You are welcome, but GP doesn’t add og:image
, have a look at this, it’s a single post page of a GP site, with its featured image enabled in customizer:
There’s no og:image
in the head
area.
The og:image
you saw on your sites are added by Yoast SEO.
I’m not sure why Yoast SEO didn’t add the featured image as og:image
on the other sites while a featured image is assigned. That’s I was trying to figure out.
But maybe it should be a question for the Yoast SEO?