I never got this
Sent from my beautiful white NOTE 4!!
You may have to delete your device from the official Samsung website and re-register it there. Lots of people were having issues with getting the coupon code when registering during the initial setup of the phone, myself included. I had to manually go to the official Samsung website and re-register the phone there. Afterward, I received the code via email almost immediately.
Alternatively, did you check your trash or spam folders for the email?
Posted via the Android Central App on my bodaciously awesome Note 4!