If you have a Firewall (hardware/software) or any other related security software running on your PC it may well affect your access to the site. You should consult the manufacturers manual or contact them directly regarding the package/hardware configuration.

To gain full access, the firewall should be configured to allow communication with the premiumtv.co.uk domain.

the domains which need to be allowed through a firewall for the World sites to work, and they are as follows:

teamname.premiumtv.co.uk

ptvreg.co.uk

You may wish to try temporarily disabling the firewall in order to test access.