If you are not able to login into cPanel then reset your cPanel password by:
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 again.