I've been trying for the past 2 days to get the download working, It started, It stopped, It gave me error codes, It downloaded near enough 72GB of the 73.33GB then failed.
Upon checking the windows store this morning it no longer said i owned Gears of War 4 and only showed that i owned the pre-order, Previously it had said both, There were no more options to try and download and the pre-order only has a manage button that does nothing.
That's when i found out that my code might have possibly been revoked, I've since been one with Nvidia support live chat who can't really tell me either way if it's been revoked and instead asked for aPicture or a screen shot of the game promo code, a picture/screen shot of order confirmation from retailer and a picture of the serial number from the graphic card.
After giving them all of this they said "I will have this checked with the concerned team and will send you an email as soon as I get an update for this."
The biggest problem at the moment (apart from the fact that windows store is a huge pile of crap) is that there is absolutely no communication from MS or the developers the Coalition so there's no way to know if the issues are because the crapiness of the windows store or if the codes somehow accidentally got revoked.