As the picture shows, what should I do if JD.COM logs off and logs on again?

In view of the problems you have encountered, that is, "this mobile phone number has been bound by other accounts and cannot be changed within 30 days, and will jump to SMS to log in for you" and "Your account has been cancelled in the current application and can no longer be used. If you need to use it, please register again", the following are some possible solutions and explanations:

Understand the prompt message:

The first prompt indicates that the mobile phone number you are currently trying to log in has been bound to another JD.COM account, and this mobile phone number cannot be used to bind or change to bind to another new JD.COM account in the next 30 days.

The second prompt clearly indicates that your previous JD.COM account has been successfully cancelled, so you can't log in with this account.

Aiming at the problem that the mobile phone number has been bound by other accounts:

As the mobile phone number cannot be changed within 30 days, you cannot directly register or bind a new JD.COM account with this mobile phone number at present.

If you decide that you no longer need your previous account and want to register a new account with your current mobile phone number, you need to wait for the 30-day lock-up period to pass.

Re-register JD.COM account:

If you decide to wait for the 30-day lock-up period to end, you can re-register a new JD.COM account with your current mobile phone number after the lock-up period ends.

When registering a new account, please ensure that your mobile phone number, email address and other information are not used by other accounts, and follow the registration process in JD.COM.

Log in by other means:

If you have other login methods (such as WeChat, QQ and other third-party login methods), you can try to use these methods to log in to JD.COM to see if you can successfully access your account.

Contact JD.COM Customer Service Center:

If you still have questions about the above steps or encounter other problems, I suggest you contact the customer service staff in JD.COM, who can provide more specific help and solutions.

To sum up, the problem you encounter is mainly due to the fact that the mobile phone number is still bound to the previous JD.COM account for a period of time after cancellation. In order to solve this problem, you need to wait for the lock-up period of mobile phone number unbinding to pass, or consider using other login methods. If necessary, you can contact JD.COM Customer Service for more help.