The server is unstable, try a few more times! One link crashes, not all of them, one always works. Recommended link #4! I myself failed to get it today at 1:00PM, tried to get it again a couple times at 3:42PM and it worked, here are my screenshots!
Monster Blue Skins Code:XBLX3-HN7X7-7NAH7

 ①Redeem Link:
t.co/hqh3nfp6Rq

②Redeem Link:
http://callofduty.com/monsterenergyr

③Redeem Link:
https://profile.callofduty.com/promotions/redeemCode/

④Redeem Link:
https://t.co/MqgdlBsLyV