Issue with Virtue theme, can't add images from gallery

I’m using Virtue theme by Kadence. It is an art gallery site – kayceeartgallery.com
I am unable to add images all of a sudden from the gallery, it was working fine, not sure what happened. I realized it when I noticed that one of my pages isn’t showing up on the “shop” page, all the other pages are there except one. So I deleted the page and re created it. When I went to put the images back in I was unable to. I can’t seem to figure out what the problem is, if someone can help with this I would greatly appreciate it.
thank you,
Kim