Hello pc10328,
Sorry to hear you are having issues with your Pavilion theme blocking a background image. If you have removed the Call to Action widget, you can follow the instructions in our Fixing a Blocked Background Image article. Use all the instructions except the code insert. For that you want to the code below:
.header-8 {margin-top: 100px;}
You can play with the number of px to make it larger or smaller to fit your image.
Kindest Regards,