It works
Just to complete this thread, Eric looked into this issue for me and it turned out that my web hosts 'Easily' here in the uk were blocking the paypal URL api-3t.paypal.com. A problem that arose because my site was on a shared server. However they did remove the block and the site now works perfectly, accepting credit cards, and depositing money in the Paypal account. Thanks to the team for all their help. You can see the working site at
www.cannydvd.com
Neil