Where do i input the code to unlock this stuff?

I
Stuped

But... i want a Gold Shotgun too... Phycorax....

I typed it as a zero 💀

Update: Guide updated with the Authority code as well. Got inside the guy's discord and checked, it was a typo error (last letter is a 0 not an O)

The Authority one doesn't seem to be working Phycorax, you sure you got that one right and nothing is missing?

this was the announcement

I guess the real reason for the announcement for those who are still out there is just to announce that M7 has created a watch cosmetic attributed to me which can be unlocked in Zero Hour with a code. Thanks M7. I just wanted to show a few screenshots and give you guys the code if you want to unlock it. Oh and I also have a Golden Tactical Shotgun skin which was handed out to a select few of us. SO if you are playing ZH and see a madman running at you with a Gold Shotgun you better duck!

Code - JAMB0

btw the Authority watch has been out for quite the while. The guy posted it on his discord for everyone.

It sure does, I've tried it just now.
Yes, that guy gatekeeping content from the game that isn't his can just put his channel where the sun doesn't bloody shine.