What is the problem with WeChat logging in once with SMS verification code and then logging in with the previous password?

Because after logging in with SMS verification code, the password will be reset immediately to protect the account security, so the previous password cannot be used.

WeChat settings require mobile phone authentication when logging in:

Open WeChat first, and then select the "I" tab.

2. Then enter the "Settings" interface.

3. Enter the "Account and .." interface.

4. At this time, we enter the "Account Protection" interface to protect the account above, and just turn on the switch button at the back.

5. After turning on the switch, we will be asked to enter the verification code for confirmation, and then click the "Submit" button.

6. At this point, when the new device logs in.

7. Pop up and send the verification code to the designated mobile phone.

8. Enter the verification code window, enter the verification code, and click "Submit".