Image captions not appearing

Hi everyone,
When adding a Featured Image to my blog posts, I am also editing/adding a Caption (to include the source information) for each.

However, I don’t see the credit/source caption being published on all the featured images (on the blog post).

Can someone provide me the instructions for how to ensure that information gets visible/seen on the blog post?

Thank you!
(Attached is one blog post as an example)

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