It appears the deal is for US residence only.
Here is what I got from customer services:
In reviewing this issue further, it appears this offer would not be
available to you. The offer is for travel from the US48, so that's who
it was sent to. I show that you both have WorldPerks accounts in
Toronto, so you are not eligible for the offer - which is why your
WorldPerks numbers are not in the e-cert database for PI092.