The easiest solution is to allow the pre-orders to buy a month of gametime and then when they get their game they can enter in the key at that time. Limit it to one month, that way people with the code who cancelled before getting it just get a month of "grace" they paid for and all of the pre-orders who are not getting their game when they should can not be penalized by a bad distribution system. Sorry if this was posted earlier as a solution, I didn't want to read all the pages of whining and no solutions offered.