Yes, since it is kinda commercial theme he don't want that people distribut his theme without permission, if you do that and you send your key to someone, you lose your theme as well, because you are sharing something that you can't because it is copyrighted, that is why everyone has his key. Good but some problems with, like tracker.php block some people to access your site for some reason...I have anything against how it works, All I want is to get this fixed, I understand him everyone would protect his work like that, Because we have all kind of people here, and they just wait to rip something and go cry around that it is their work....