Get Simplr theme images back into search and category results

I’m loving the theme simplr except for the fact that when I click on a category link, or search, I get brief results without images. I can do some php editing, but I don’t know enough how to edit it so there are post images in the results. Does anyone know which php files in the theme to edit, and how?

Here’s a link to one of the category results so you can see what I mean: https://www.alidasaxon.com/?cat=39