Visa, MasterCard, American Express, Discover, and other well-known credit and debit cards are all accepted. PayPal payments are also accepted on the Coppertist.Wu website. If you are having problems using your credit card to make a purchase, please double-check all of the information on your card, including the expiry date, name of the cardholder, security code located on the back, and the billing address. Please check to see whether you’ve used up your card’s limit or if your bank is still reviewing your card. It is advised to attempt a new card or payment option in the event that your payment is still rejected.