In order to access your cPanel first try logging in your TVMSERVER Client area -> My Services and click the button under your hosting account. A new page will come with the button of cPanel Login.
Alternatively, you can access your cPanel directly through:
https://www.yourdomain.com:2083 (for secure connection)
http://www.yourdomain.com:2082 (for normal connection)
TVMSERVER the best cPanel hosting packages. With it you can access and manage your cPanel without any problems.