Image displays as published but doesn’t show up in the portfolio?

I apologize if this isn't the right place to ask this particular question. I'm not super website/tech savvy. I have operated a website for my art for many years now through Word Press, using the Avada theme. I just encountered an issue I never have before. I posted an image to the portfolio on the 18th (which I titled Gallery, but I don't think that's relevant. I just may slip and refer to it as that at some point). Today (the 20th) I posted another image. I randomly decided to check my actual website to see how the image displayed in it's preset thumbnail form and I notice that the image from the 18th is not there. I checked the portfolio list and it shows up as having been published and viewable. I clicked 'edit' to double check to see if anything was weird when I made the post and all seems in order. On the landing page of my website I have a 'recent works' section that displays, well, the things I've recently published to the portfolio page. The missing image displays there, just before the image I posted today, where I would it expect it to. If I click on the image, it takes me to the individual post with my caption and whatnot, as I would expect. If I click either the 'recent works' button I made or the 'gallery' button at the top of the page (which both go to the same place), it takes me to my gallery, but the image is still missing.

Anyone have any thoughts?

 

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