I Have the Halo 5 Limited Edition Console, and I never got this armor, I contacted Microsoft support, and they sent me here, I have proof of purchase, and link to it.
Where’s the link?
Ah, these bundled codes and whatnot. There’s a high chance your Fotus Chillrose code is no longer supported or simply expired after so long. Being that you’ve bought a console bundle that is nearly 4 years old, I wouldn’t be surprised.