In spite of being able to list one's loyalty cards on the app the cards are not used towards purchases. Today, I lost out on over $20 worth of PC Optimum points that I was hoping for (since I am unemployed and every cent counts right now!) as my loyalty card was not used for my purchase at Real Canadian Superstore. When I brought up the missing points with Instacart, I was told: "You can add your loyalty cards on Instacart so you can earn points or perks from the specific retailer every time you purchase through Instacart. However, redeeming your points or rewards cannot be done through Instacart and you have to make the purchase directly from the retailer." What in the actual heck?! This doesn't even make sense! I have cancelled my membership and will be getting pickup directly from the store in future. I don't know who benefited from my PC points today but, as far as I can tell, this is fraudulent and a scam. You have been warned!