The reasons for this situation are: fake orders, the account password is too simple, there may be remote login and advertising information. Generally, the solution steps for this kind of situation are as follows:

1. Open Taobao, enter the account and password, and the following page will pop up after logging in. Click "Please click here to verify" to proceed to the next step.

2. Then enter the login name and verification code again according to the system requirements, and then click "OK" to proceed to the next step.

3. On the pop-up page, you can see the "Verify by entering the mobile phone" option, click "Verify now" to proceed to the next step.

4. Then enter the mobile phone number bound to the Taobao account and click "OK" to verify.

5. Finally, on the mobile phone number that has been bound to Taobao, follow the page prompts, edit the text message and send it to the relevant number to complete the verification. After receiving the prompt that the system verification is successful, the verification can be completed, and the account can be logged in normally. Source: Taobao Service Center-Account cannot be logged in