All game worlds you log into using your email share the same password. If you change it, the update will apply automatically to all of them.
In the main menu, select “Galaxy”.
In the galaxy view, click your account name and choose “Account Settings”.
Select the “Account Password” row and click “Edit”.
Enter your new password, then confirm it again.
Once confirmed, your password will be updated across all worlds using the same email to log in.