After November 3, the Circle K promotion officially begins here in the US, whereas in Canada, this does not apply since the Razorback is part of the base part of the promotion. I don’t know why this isn’t the case here in the states, but that is neither here nor there.
I’m not entirely certain how the kiosk deal works, but I speculate that upon checkout at the store, there are digital kiosks, and you either put in your phone number into it to receive your Rockstar Razorback code, or you submit a code on your receipt to a number on display and it responds with the desired code in general.