These 'phantom' lightbox images are impossible to remove

I’m setting up a website for a friend and I’m stuck on the strangest thing I’ve seen in webflow yet. I copied this gallery over from a free site because it had this beautiful basketweave grid, however for some reason I can’t get rid of the original lightbox images.

I’ve completely removed them from the lightbox settings and have made new group names, however, the original lightbox images persist.

I can’t seem to figure out how to get rid of them, any help is seriously appreciated.

For some reason the lightbox doesn’t work in the read-me version, here’s a link to a webflow hosted version.

Here is my site Read-Only: LINK
(how to share your site Read-Only link)