GridMarket Header not updating

Hi,
I need some help with my GridMarket child theme and updating the store header. I have uploaded the correct size 980 × 100 pixels and even tried to upload under "theme options" uploaded and cropped and saved. But this does nothing.

I would like to have an image and then have the store owners business name to display aswell? Is this feasible.

I do have a blog template and was hoping to upload this new image so it shows on old sites and any new created. Then updates their store title each time with the near header image underneath.

Even when I go back and check if the image has stored and saved under 'theme options'. I can see that it is there. But when visiting the site. Nothing has happened.
Lisa