What is fast payment? This is the normal credit card payment process of foreign websites. You only need the credit card number, name and expiration date to pay. The same is true in foreign countries, where domestic passwords are not needed, which worries many friends. In fact, as long as you protect your account and credit card information is not leaked, it is no problem. The safety of Amazon in the United States is worthy of rest assured, but we must also protect ourselves. If you use a domestic credit card, you only need to be abroad.
When you say unbinding, you mean unbinding the American Amazon credit card. Go directly to the personal account of Amazon.com and delete the credit card payment information.