Razer Product Number isn't working.

I peeled off the ear piece to my kraken headset, and i put in the numbers i see (don't really know which one) But both didn't work, one for obvious reasons because it isn't the correct code, but the 15 digit code still didn't work, and I'm trying to get the 7:1 code to work because i like how it sounds, but ive been having a rough time doing it the whole day.