The code process is pretty convoluted make sure you're doing it right. First thing is to take your receipt code and go to Bungie.net/redeem after you enter the 9 digit code there a popup will appear that has a link to your profile where you will chose your system ie. ps4,xbox,pc. Once you chose it will ask to confirm and will give you a code for your system. For Ps4 you'll go to the store and scroll all the way to the bottom of the list to Redeem codes and enter the 12 digit code that you received.