I don't think I was responsible for marking your scan(s) but I did do so for a number of them today because they were probably aggressively cropped by the person's scanning software. It's possible that's what happened in your case, or like Ed said, something could have been covering it. While a good CCD scanner can generally handle scanning cards in toploaders, one-touches, and grading cases, I highly recommend putting cards directly on the scanner glass as much as possible. Take the time to do them right and they'll start getting accepted often enough that you get automatic approval