Hi,
I managed to find the issue with the images as well. There was something wrong with the queried items that were passed to the results page, perhaps there is a filter used by the theme, that does not apply to these results.
Anyways, to resolve that, I have placed the following custom code to the functions.php file in your theme directory:
This custom code will run the default WP_Query, so any filters or custom codes may apply. The images should be showing now.