It would be possible, however you'd need to make the request from the forum account that is associated with your hosting account so we can verify that it is your account.
If you are unsure of what forum account is associated with your account, just log out from the forums and then use the "account support" option in your portal and click "visit forums" from there
I have changed the domain for you since you verified it is your account, there may be a few minutes before this is reflected in your account portal and in cPanel.
Also remember that there may be a small delay before the domain is working fully, this is called propagation time (meaning the time it takes for Internet to learn about the new domain. Usually it works within the hour, but it can take considerably longer.
Don't forget to update any scripts you may have installed to reflect the change as well to ensure they work correctly.
Since this has been resolved I'll close the thread, feel free to open a new support thread if you have any other questions. For easiest assistance please use the forum account associated with the hosting account.