You can change your password to access your game account at any time by clicking on the top left pull out panel, under “Game Info”, and selecting “Edit Your Details”

You will be taken to the “Edit Your User Details” page where you can type in a new password, then confirm the password. After you have typed in the new password in those two boxes click on the “Save Changes” button at the bottom of the page.

You can then close the page and return to the game by clicking on the “Exit User Details” text.