You can add something to your favorites by adding payment accounts or (loyalty) cards. These are the two categories you can add to your favorites. The reason for this is simple, because these are the two categories that you will use the most.
To fill your favorites, you should scroll in the overview screen to your (loyalty) cards or payment accounts. Every (loyalty) card or payment account has a framework with an empty or white heart at the bottom. Empty means it is not selected as a favorite and a white heart means it is. Click on the heart to turn it white and it will be added automatically to your favorites. Scroll up or click on the OK logo in the top to see your favorites.
[Learn more about how to remove your favourites]