I don't see why a we need a code, if you look at the Web page for the offer no code is mentioned. I guess they will automatically provide the double points for the selectEd. I also guess there must a current point cut off to revive the offer, like something just over 200. I can't think what else QR would have used to determine who resources the offer or not.

I have a flight on 1 Dec and will report if I get double the points or not (I didn't receive the offer). If I don't then I will certainly be connecting QR requesting double points.