Featured Image Not Appearing

Started a new job where a dev site was already in progress using Aqua. Coincidentally I chose Aqua for a new site launch at my previous job!

I tried to add a featured image to one of the pages, and while it will let me select and add the image in edit mode, it’s not displaying on the page after I update it. The site has other locations where featured images are already in place, but those are all posts. Is the fact that this is a page instead of a post possibly the issue, and if so is there a PHP file edit that would enable them for use on pages?

I also tested adding one of the featured images that is already working on a post, but that also did not display on the page.