hi the reason you are having this problem is because there is high traffic for downloading the beta and also because some of the codes that have been sent out arnt registered because of this high demand so please allow at least 45 minutes for all codes to be registered
p.s. i couldnt pre order bo3 and am without a code if u are generous could u please send me a code my gamer tag is double 0 caden (double zero caden)