How should I enter my credit card number? March 21, 2022 07:27 Updated Please enter only the 16-digit card number, without spaces. Related articles How do I change or remove my credit card details? What are the payment options available to me? I do not have a credit / debit card. So how am I going to order on the app or web? How do I make payment using GrabPay? What if I have a problem with a payment or face any errors while placing my order?