You have attached a screenshot but I don't see that you are on editing page. I am still not able to edit any of the headers. I made a screen-recording but your system didn't let me to attached it. Format was webm I put it into zip file then attached it but your system gave an error that says "Upload file error."
Let me explain the problem again. I go to Theme Options then on the left side click on Footer. When I click on any footer it takes me to edit the footer.
I go to Theme Options then click on Header on the left-side menu. I see the header in the middle of the screen, when I click on the image of the header to edit it like I did for the footer nothing happens.