I think you can only enter to win a free items and/or coupons through Thanksgiving (the 23rd):
“prize winners will be notified via email before November 30th, 2017.” “From now through Thanksgiving, Grab-A-Gift!”December 3rd is the last day to use the $ off coupons… the contest is over long before then
“Game coupons may be used during the Black Friday sales taking place between November 24th and December 3rd, 2017”