featured image not displaying on posts page when using static page for home

Hi and thank you for your help –

I recently set my homepage as a static page and have a separate posts page for “recent blogposts.” I put a featured image on this posts page (using banner featured image layout) that will not display. I put featured images on all other pages on my website – using the banner featured image layout – that work just fine on those pages. Why can’t I get the featured image to work on the posts page? (It also won’t show the featured image if I use the default featured image layout option.)

Some more info…When I am editing the posts page and click “preview changes” it shows me the homepage, not the posts page that I am editing.

I use the Kale Theme, but I have a plugin that lets me use it the way it was before WordPress updated several years ago (if this makes sense).

Thanks for your help!!

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