Extra View Not Working

For the past month I have traveled between my primary and holiday residence. To get my Extra View activated has been an absolute nightmare. A month ago I was on the line with Customer Care for almost 2 hours before, after numerous attempts of re-booting, unplugging cables etc, we got Extra View to work. I am now back in my primary residence. Once again I had to call Customer Care to get everything working. An hour later, 3 different Customer Care Consultants, rebooting, unplugging of cables and being on hold forever, I have just given up. Can someone please help me get my Extra View to work?????