To add a loyalty card to your account, go to your Account page in the app and tap Your Loyalty Cards, then Add Card. Select the card you want to add, type your loyalty card number in the box, then tap Add Card.
Loyalty card numbers are typically between 11 and 12 digits long and begin with a 4.
At this time, the Loyalty Card feature is not yet available in all states and it is not available anywhere in Canada.