Cannnot change header background image

I used a template for Employment application but I can't seem to figure out how to change the background image in the top header.  There doesn't seem to be a place to adjust the image.  Can you help me figure out how?

We apologize for the inconvenience caused. I was able to see the problem also when I checked on your form. 

But it seems you have deleted your form https://www.jotform.com/200145530514138 

Can you please restore the form first so that we can fix the issue properly.