Step 1.
You will first need to log in to your GGServers account. In the Client Area of the GGServers website, select “Services” in the navigation bar and then select “My Services”.
Step 2.
Find the service you want to change the Multicraft password for and click on that service.
Step 3.
Scroll down on this page and you will be able to see the "Change Password" fields.
You have successfully updated your Multicraft password. Now you can go Multicraft and log in with your new password.