Image Link To Post Not Working

I used the following CSS to delete the post title and category from within the images on my home page and this worked fine:

.lsow-portfolio-wrap .lsow-portfolio .lsow-portfolio-item .lsow-project-image .lsow-image-info { filter: brightness(50%); }

.lsow-portfolio-wrap .lsow-portfolio .lsow-portfolio-item .lsow-project-image .lsow-image-info { display: none; }

Now I’d like the entire image to link to the post but when ticking the “Link the image to the Post/Portfolio?” box it doesn’t work. I tried ticking and unticking the box a few times and also switched back and forth from Masonry to Fit Rows and nothing works.

I see that last year someone asked why you included that checkbox if an image link is not an option. The person who wrote that post said they found a solution via CSS but they didn’t post it. I hate when people do that! They did include a link to the site (re-posted below) and it does appear to show images linking to posts but I looked at the CSS and can’t figure out how it was done. Can anyone help?

http://susangreene.org/projects/

(Note: I am testing this plugin on a localhost site so I can’t include a link to it. And I’m testing it with the SiteOrigin Vantage theme.)