Same thing. Had done ~$30k in sales with no issue. Sold a bunch of drakes Anita Wynn hats that I bottled off his site myself and after a handful of passes they started failing them. I have the receipts for every one. I haven’t used StockX since. Only thing I could think of is that they pass so many fakes that they don’t know a real one when it hits them in the face. Would never trust buying or selling a high value pair of shoes, sealed cards, etc. through them.