You can change your personal passwords, such as your game password or website account password.
On the website, access your account.
After logging in, click on "Account."
Choose which password you want to change, whether it's the website password or the game account password.
Enter your current password.
Enter your new password.
Repeat your new password.
Then click "Save."
For the website, the process is the same: you'll need to enter the current password, the new password, and repeat the new password. Then, just click Save.