The code is intended for members. If it's widely shared to non-members, then that risks having the program abused to a degree where it's shut down.
If you're no longer able to receive Perkopolis through an employer, another way to access it is via Canadian Tire Roadside Assistance. Either get it for free with a Triangle World Elite card, or purchase the roadside assistance membership. In both cases you'll then have access to Perkopolis and can use the benefits guilt-free

Having said that, I had a look at my Perkopolis account and there is currently no code listed for Westjet.