Hello, did you log in through the downloaded client? What is the operating system of the mobile phone? What is the complete error prompt and error code given? Please describe it in detail, or visit the "online customer service" of China Merchants Bank (website: /cmu/icslogin.aspx? from = B& amp； Logincmu=0), we will serve you wholeheartedly! Thank you for your concern and support for China Merchants Bank!