Multiple Image Choices Not Showing

I have the latest Yoast SEO plugin installed on our site and when I go to test a page on the site, it is only giving me the featured image as an option when posting in Facebook.

Ideally I should be getting the featured image, any other images on the page and the default OG image we set in the plugin settings.

Has anyone else encountered this?

https://advocacydays.org/advocacy/
https://advocacydays.org/2014/05/22/everyone-can-do-something-young-adult-reflection-from-ead-2014/

https://www.ads-software.com/plugins/wordpress-seo/