Unfortunately, once a MoneyBack account has been bound, the system does not allow for a further change or the unbinding of MoneyBack account at the moment. We are working hard to improve on this. Sorry for the inconvenience it may cause and thank you for understanding.
Go to the application centre in the middle of the homepage before payment and tap "more", find "MoneyBack" (Shortcut recommendation: Tap "Homepage Apps", tap"edit", drag "MoneyBack" to the home application), show the QR code for collecting points, and proceed to make a payment.
Currently, every MoneyBack card can only be bound with one AlipayHK account and vice versa. The system is unable to edit an existing binding once it is processed, so please do take note in the process.