If you haven't logged into the forums from a long time, then it most likely that your account has been terminated for prolonged inactivity. Click on this link www.x10hosting.com/logout and then signup for a new account.
You've not made the change properly. If you want to keep both the domains, then go to cPanel and add the domain you've registered under addon domains, this way you will get to keep the subdomain as well as the domain.
I checked your site and since you are on the advanced plan, you can place the ads anywhere on the site. And you are currently using an unsupported language. The sites must be in english or should atleast include a translation of it in English.
You could not login to your cPanel because your account was suspended for not changing the index page. I unsuspended your account, please change the default index page to your own.