If you choose to pay with Debit/Credit Card, a payment window will open once you confirm your order.
Choose Credit/Debit Card Tab as illustrated :
And follow the step of the payment until the end.
Attention, you are given 10 minutes to complete your request. If you fail to do so, you always can pay your pending order in your account order page by clicking HERE. Then click view among your order list :
You can pay your pending order by clicking on "PAY NOW" button on the order page :