The mobile phone number bound to the postal savings bank card has been modified. Why can't I receive the SMS password when I pay?

Hello, if you use personal online banking for online payment transactions, you need to bring your ID card, bank card or passbook to the business hall of Postal Savings Bank to modify the mobile phone number bound by online banking; If you use Alipay Cartoon or Tenpay for online payment, you need to go to the counter to modify the mobile phone number bound by Alipay Cartoon or Tenpay. If your bank card has registered personal online banking, you can log in to online banking and click Apply for Opening-Online Payment Link-Mobile phone number modification. You can modify the mobile phone number bound by Alipay cartoon or Tenpay.