[Justin]

Originally Posted by eUKMatthew

Please open a support ticket on our helpdesk with exact domain name so that we can check and fix this for you.

Matthew,
UK Web Hosting, Website Hosting, Web Hosting UK, Web Hosting

Thank you for your reply Matthew. I managed to find the solution or the same

Now, I can easily add subdomains through cPanel. The reason I was not able to add them because VHost was not adding in apache conf.

Thank you for your help