The negs may not be specifically for this item you bought; however, they are generally with the same problem you have. The item doesn't work. Feedback can tell you a lot regarding the seller. The best part of the feedback, and one of the important aspects of it for me, is how the seller handles complaints, but also how many buyers are experiencing the same issue, such as item not working. I'm not saying that's a red flag per say, but it certainly would have me raising an eyebrow. But as I said, you have a 30 day money back minus shipping.