In the photos section, I see some of mine in the "advertising" section - i.e. referring back to SS for sales - but none that are free.
Did you try a DMCA takedown notice for the ones of yours you were able to download? If they're a SS affiliate, they'd risk losing that if they host pirated stuff (wherever they got yours from). Perhaps that makes them more likely to behave and take down the stuff they shouldn't be giving away?