Something has to be way off. Are you sure it was set at zero and not a number on the opposite side some how? If it is set on zero then you have a bad scope or a ring problem. On red dots the dot will appear to move as your head moves around, the shooter can make to dot appear to move in the scope. I have seen red dots and even regular scopes damage real easy from falls or what ever. The cheapest advise I can give you is go to wal-mart and buy a cheap red dot scope and put it on and see how it does. You can get one for 25 bucks most of the time and that will help you eliminate the scope or bow. Take the rings off and make sure they are OK and not damaged, along with inspect the scope rail. But if you bought this new I would take it right back and tell them something is not right. Two feet high at ten yards is almost unheard of IMO. Something has to be way off.