Does the questioner want to ask "What should I do if I cannot add an account with a credit card on the Bank of Chongqing app?"

1. First, make sure your phone is connected to the Internet and reopen the app in a stable network environment.

2. Next, go to the app store and the official website of Bank of Chongqing to download the latest version of the app to ensure compatibility and performance.

3. Finally, if the problem still exists, contact Bank of Chongqing customer service to provide specific questions and error information for further help and technical support.