Login to http://x10hosting.com/control/login.php with forums username and password.
Go to "Hosting" on TOP navigation, ----> Then Click on "update password". There you can change your password. put forums password in "Current Password" field.
Note: After this process, password for your client account, cPanel, and forums will become same.
Then try login to cPanel again.
Would you please stop posting that repeatedly in every thread related cPanel login issues. That is spamming and could get you unwanted attention from the moderators.