According to inquiries on Caiyu.com, we learned that the reasons for the failure of China Construction Bank mobile card authentication are as follows:

1. The entered information is incorrect: when the cardholder uses a China Construction Bank credit card for transactions , if the credit card number, validity period or CVV2 code and other information are entered incorrectly, the cardholder authentication will fail.

2. Insufficient credit limit or overdraft: If the credit limit has been used up or the credit card account has been overdrawn, authentication will fail.

3. Banking system problems: When problems arise in the construction bank system, it may also cause cardholder authentication to fail.

4. Security measures: In order to ensure the security of the cardholder's account, China Construction Bank may temporarily freeze or lock the account. Once abnormal transactions are discovered, authentication will fail.