To set up the Hue nest integration your bridge needs to be reachable via the Philips Hue cloud. Make sure you are able to control your lights from the Philips Hue app, even when your phone's WiFi is off (with Out of Home connection). If this doesn't work, please see www.meethue.com/support/technical
. You should also make sure you are using the latest version of your favourite web browser and that your nest app shows your system as connected. Once you've checked this please try again.