I want to change my password.

Navigate to our Customer portal by signing in with your existing credentials,
Continue to the "Change password" link either at the very bottom of the page in the "Account management" section or you can find it by clicking your user name icon at the top right corner, where you can find the "Change password" link in the menu as well.
In the change password form fill in your current password and then type and re-type your new password. Click on the "Save" button to save the changes.
Your password has been changed. From now on, you can sign in to your account with the new password.