I just received a new type cover that I bought off ebay. It is not working. I know it is not my device because I also have a touch cover that works fine. ive tried restarting the computer and connecting the keyboard a bunch of times but it wont register. is there anything I have to change in settings? The seller offered to give me a refund however would Microsoft replace it at their store? I have complete also if that matters. it would just be way less of a hassle than shipping it back. thanks