Seems to me like the reward was free gas.
If you’ve developed your system that the rewards card can provide a bypass to free fuel, your system is the flawed one and it isn’t on the customer to provide feedback. This isn’t a user testing scenario, they should have solved this bug before it went to production.
People aren’t responsible for cheaply built solutions.
I was coming to comment that I’ve driven starting in Toronto for 24 hours and stil was in Ontario, KMs from Kenora.