1. Open the login page of Shantou Education Cloud, enter your account number and password in the login box, and click the "Login" button to enter the personal center page.
2. On the personal center page, find options such as "account management" or "personal information" and click enter.
3. After entering the account management or personal information page, you can see the options of "Modify Password" and "Modify Email". If you want to modify the password, you can click the "Modify Password" option, enter the original password and new password, and then confirm the new password and save it. If you want to modify the mailbox, you can click the "Modify Mailbox" option, enter a new mailbox address and save it. It should be noted that if you forget your password or can't log in to your account, you can try to reset your password by using the "Retrieve Password" function. If you can't solve it by yourself, you can contact Shantou Education Cloud customer service staff for help.