FOTUS-CLASS ARMOR

Hey all. So I just recently got the promotional code for the FOTUS armor in halo 5. I typed in the code while logged in to my account in Xbox Live, but then in game I can’t equip the armor. I asked a friend and he said that it was under a Requisition, but I can’t fine it there either. Is this a common issue? Can anyone help? Forgot to mention that I even tried to go to the site the keycard told me to go to: halowaypoint.com/halo5legal and the site says the page can’t be found. I don’t know what to do.

You go to main menu on halo5legal
press Y and open all your pack

Main menu in the game