I've tried this, without any luck. If everything is different, email, vpns, etc, they can only be tracking via the device you're using. that's the one thing I was unable to try since I use all my computers to login to there at one time in the past. so they are somehow tracking the device itself. perhaps the MAC address, but I'm not certain and I gave up giving a shit about that place. try a device in which you've never accessed their site, Web or mobile.