Where's The Coupon For The Quater Pounder?

I got a coupon in my email that said Pair your next Coke® with a FREE Quarter Pounder®*
Simply enter any MCR code and you’ll receive a coupon for a FREE McDonald’s® Quarter Pounder®* with cheese. Take your pick of three tasty, brand-new varieties: Bacon Habanero Ranch, Bacon & Cheese and Deluxe. Mouth watering yet? Let’s eat.
I put in a code and I didnt get any Coupon, please help. Thanks.