Header image not appearing in Catch Responsive Pro

Hi, I'm choosing a background image for my header in the Header Media section of the Customize menu but the image is not appearing in the header--there's just a solid color background. I see this issue was addressed in earlier posts with an upgrade that should have fixed it but I'm using 4.5.3 and it isn't working. I also can't set the Background color to Transparent in the color picker, though I can set it to other colors. Can you tell me how to fix this? The url is relatingwellcenter.com Thank you!