I have followed all the videos/how-to blogs and for one, my user interface looks different than the instructions. When I get to the mockups page with sweatshirt, after hitting the continue button, I get an array of product parts with my design on them but not an actual mockup I can use. I would appreciate any help at all as I have sent numerous requests to the company and not getting a reply. I am on Safari, updated Mac. Thank you so much!