i wanted to put up my best-selling designs on Sweatshirts / Long Sleeve. But, they got rejected due to "copyright" issues. Since they are of course my own designs, which I uploaded on T-Shirt previously, this doesn't make any sense. So the only reason I see, is that the amazon software doesn't recognize that the designs have been uploaded from my account. What can I do to upload my designs on sweatshirts now?