Cant Connect to buy.norton.com

Hi all, need some help here.  I ran out of allotted time on Norton, waited a few days then tried to renew my subscription.  No matter what I do, I can't connect to the buy.norton.com website to renew.  I have updated Norton and am now on the free 15 day trial version and have 14 days left.  I have run it and it found nothing, I also got a new spy ware scanner and that found nothing.  Any ideas on how to get the renew to work?  I have tried on both Firefox and IE and can't get it to work.  Any help would be great, thanks.