Cannot connect to the Norton server

I have install Norton Security on 3 other computers. I "Cannot connect to the Norton server" on the fourth computer. I have had 2 Norton people take over my computer, they could not fix after a couple of hours. The last one said higher up people would call me. I gave them a phone number and a time period to call. That time period has gone by for over an hour. What is important I need to be able to get connected to Norton server. Need all suggestion I can get.