Payment Method is only PayPal
You can pay by credit if you register through PayPal to use your card. You cannot pay directly to S-DARTS by credit card.
PayPal is an online payment service that the PayPal company runs.
If you register your bank account and credit card information with PayPal and acquire a PayPal account, you can make internet payments by providing only your email address.
You do not have to enter your credit card information every time you make a purchase, so you can complete online purchases (internet payments) quickly and easily.
You can use PayPal payments with confidence that they are secure because you do not need to inform the counterparty of your credit card information every time you make a purchase.
Please reference PayPal's website for detailed information about PayPal and to register as a member there.