Where are you logging in at? There are two place to log in, your account panel: https://x10hosting.com/control/login.php, or your cPanel which you can find a link to from the account panel. In cPanel, File Manager link is where you manage your files.
Your question is answered and you did not reply in last 3 days. So I am going to close this thread. Feel free to create a new thread if this problem is not solved yet.