No Gears of war codes after install the game 1 month

Just to clarify, you get the Gears of War collection (1, 2, 3 and Judgement) with both the Standard or Ultimate edition of Gears of War 4. See here
www.xbox.com/en-us/games/gears-of-war-4

You'll receive your codes for the titles within 1 month via an Xbox Live message. Codes are being sent out in waves, so it's hard to estimate a more precise time-frame (though they have already started to be sent out).

Hey Don -

The Gears of War legacy collection is being sent out to customers via Xbox Live message within one month of redeeming your Gears of War 4 code. Source: >>Gears
of War 4<< store page.

If you still don't have your codes a month after redeeming your Gears of War 4 game, feel free to post a new thread and we'll take a look then.

Thanks for understanding!

Hey Mickyhg -

According to the Gears of War 4 Microsoft Store page, you should receive your codes via Xbox Live messages within a month of the date you
redeemed your Gears of War 4 code. If after a month you still don't have your codes, feel free to post back and we'll look into it then.

Thanks!

EDIT!!:

Gears of War 1 AND 2 are the games effected. I recieved codes for all the previous games (gow1, gow2, gow3 and gowjudgement). Ive entered the codes for all 4 games but only the last 2 games are available to install.

on 13/10/2016 I got the game gears of war 4, and along with it comes the codes to access the previous games, but the code to gears of war 1 and 3 am unable to use, are not valid.