We support instant transfers of your line to your debit card. The debit card has to be issued for the linked bank account.
If you add a pre-paid card, a credit card, or a card that is not issued for your linked bank account, the instant transfers will fail. You will receive an email and a push notification to try again with another method such as direct transfer to the bank account or use funds as a gift card. If your instant transfer has failed, don't worry you will not be charged the transfer fee.