1. Why Can't I Use Visa or Mastercard Directly? (The Credit Card Ban Explained) So, you found a god-tier game or doujin on DLsite, tossed it in your cart, and… wait, why is my credit card getting rejected? If you're dealing with this right now, you're not alone. Recently, major credit card companies like Visa and Mastercard have been heavily restricting NSFW content. Because of this, direct payments with Visa and Mastercard are currently suspended on DLsite's main checkout page. Note: If you have a Japanese JCB card, you might still be able to checkout directly, but for most overseas ...