Never got my Gears of War codes.

After further investigation, we've determined that you are not eligible for the promotion for one of these following reasons:

• You must have played Gears of War: Ultimate Edition while connected to Xbox Live before Dec. 31st 2015. If you played after that date, you will not qualify for this offer.
  
• If you are located in Japan, Germany, or China, you do not qualify for this promotion. Additionally, if you are located in a non Xbox Live supported region, you will not qualify. For a list of supported Xbox Live regions, please check our Xbox
  Live Countries page.
• If you are under the age of 17 or have set your birth date incorrectly on your account (Example: December 12th 1899), you will not qualify for this offer. Your account must be set up correctly to reflect your accurate birth date. To check the birth
  date on your account, head over to your Personal Info page on your account. Changing the birth date on your account using the site above does not change your
  Xbox Live account's birth date.

We're sorry for any inconvenience this may have caused. Please keep an eye out on news.xbox.comand majornelson.com for any future promotions
you may be interested in. Thanks for posting!

i got the same for my gears of war codes all worked except for gears of war 3

Sorry to hear it. The codes are being sent out in waves. Please keep an eye on your Live messages for more info.

In the meantime be sure to check out the FAQ to make sure you're eligible for the offer.

forums.xbox.com/.../2076838.aspx

I have not received my code either for gears of war ultimate edition. I bought the Xbox entered my code on the website specified but never got an email with the code to redeem the game..... any help would be appreciated.

No, I bought Gears of War Ultimate Edition via the xbox one bundle, joined an ongoing multi-player match, then never got the codes