No header image in the product page

Hi,
I want to sell gift cards for hotel stays with us so I installed woocommerce and added a gift card as a product. The problem is when I add product image, the header image of the theme is not loaded. It’s just gray space. If I remove the product image, the header is loading as it suppose. I know your theme is probably not made for woocommerce, but it seams to be some kind of bag you should be able to recreate and to fix.
Thank you!