Nowadays, in the Internet age, many things have begun to be internetized. People can realize many things at home without going out, such as online shopping. If you want to buy online, you must have a wealth management account, and this wealth management account is also bound with relevant bank cards. Paypal is a global financial account, and many people are Paypal users. So how does paypal untie the bank card? Log in to paypal account, unbind it, and modify it as follows: 1, open the control background of Paypal, and select Financial Information-My Pre-approved Payment. 2. We can see the automatic payment agreement between Godaddy and Paypal. Choose Godaddy.com, LLC. 3. Click here to cancel. If it is because the bank card has expired, you can choose "remove" to replace it, or you can leave it alone. Paypal can unbind a credit card after binding it.

Paypal related regulations:

1. Authenticate both parties to the transaction to prevent payment fraud. Digital signatures and certificates can be used to authenticate all parties involved in online commerce to prevent payment fraud, to authenticate the validity of the identities of all parties involved in online commerce, and to issue digital certificates to all parties involved through certification institutions or registration institutions to confirm the legitimacy of their identities.

2. Encrypt the information flow. We can use single-key system or double-key system to encrypt and decrypt information, and we can use digital envelope, digital signature and other technologies to enhance the confidentiality and integrity of data transmission and prevent unauthorized third parties from obtaining the true meaning of information.

3. The digital digest algorithm confirms the authenticity of payment electronic information. In order to prevent data from being created, embedded, deleted, tampered and replayed by unauthorized people, and reaching the receiver intact, data hashing technology can be adopted.

4. Ensure the non-repudiation of trading behavior and business. When there is a dispute between the two parties in online transaction, especially the dispute related to payment and settlement, the system can ensure the non-repudiation of related behavior or business. The online payment system must generate or provide sufficient evidence in the transaction process, so as to quickly distinguish right from wrong in disputes, which can be achieved by digital signature and other technologies.

5. Dealing with multilateral payment of online trade business. Payment and settlement involve customers, merchants, banks and other parties. The transmitted purchase information and payment instruction information must also be connected together, because the merchant will only continue the transaction after confirming some payment information, and the bank will only provide payment after confirming payment.