How do I add my RBC Rewards credit card to Carrot? Rory June 18, 2018 17:49 Updated Make sure you are using the most recent version of Carrot. Once you are, here’s an interactive video on how to authenticate your RBC credit card and have it linked to your Carrot Rewards app. Related articles How do I add or change my rewards card? Comments 0 comments Article is closed for comments.