Responsive Row Image PageBuilder – 3rd party theme

Hey guys, I’ve looked through the forums and can’t find anything for a 3rd part theme.
I’m using TESSERACT theme and have siteorigin pagebuilder, I’ve made the row background image and placed a widget on top with text. However whenever I view the site on a mobile device the image doesn’t resize and left with either a white patch or a very zoomed in shot. Is there anyway to make the background image resize with the width on the device?
URL: neverbetterpt.com.au
Thanks.

URL: http://www.neverbetterpt.com.au