Network connection problems, bank server maintenance, authentication errors, etc.

1. Network connection problem: The network is unstable or faulty, and the bank system cannot be accessed normally.

2. Bank server maintenance: The bank will maintain and upgrade its system, and some service functions will be suspended during this period.

3. Identity verification error: The entered identity authentication information (such as user name, password, verification code, etc.) does not match the information recorded in the file.