Meituan couldn't unlock the bank card and said I owed money.

You can untie it. Binding the bank card belongs to the business of the loan company, and unbinding the bank card belongs to the banking business, which can be directly unbinding without affecting them. Unbinding can follow the following process:

1. First, open Meituan app, enter my page in the lower right corner, and click my wallet.

2. Secondly, click on the bank card and select the bank card that needs to be unbound.

3. Finally, click (...) and click Unbind.