It is recommended that you always login through:
https://x10hosting.com/panel
This being said, by the looks you have probably not logged in for nearly a year, there was actually a problem with your dashboard account. I have corrected this, but you will need to do a proper password reset at
https://www.x10hosting.com/login before being able to use the account properly.
https://x12.x10hosting.com:2222/ will NOT take your email as username nor will it take the forum username, it takes the username as seen in the account dashboard (ie user @ x12), the password will NOT reset when you reset the dashboard password (or forum password), you can however change it from inside the dashboard if you click on the service name first.