Background image not showing on responsive

For two column displays, the background image in the left or right column does not get displayed responsively on anything iPad or smaller…

http://blueowlcreative.com/wp/fortuna/home-page/home-full-slider-3/

In the bottom of that demo page, “Fortuna is simply Awesome” row with image (man using laptop), the image does not show on iPhone, iPad, etc.

I’ve played with checking/un-checking the boxes under Responsive for the right or left column cell – only one column shows (text or image) but not both. By default, the background image does not show.