All of my vintage birthday shirts - created by me in illustrator - were removed. I wrote back simply asking why and who complained. I wrote to the merch address, but perhaps I should have done a counter-claim (read about that afterwards here.) I know the designs are my own, but sometimes there turns out to be a trademarked phrase either in the description or something that you didn't know was trademarked. So I am planning to wait first. But it's very frustrating. I had just sold one of these shirts today, and that sale is now dead. Can I provide my illustrator layered files as proof that I made these from the bottom up?