If I turn wifi off on my phone I can access everything through my phone and the nzb360 app. As soon as I turn wifi on and connect to my NEST router I can no longer access anything through nzb360. For the sake of argument, this exact setup worked perfectly for the past 6 months and just stopped. On the plus side, I have access, on the negative I need to constantly turn wifi off on my phone. Does anyone know what could be wrong?
Is the router set to automatically update its firmware. If yes them check the firmware logs for any changes, and the forums for any changes that have had unintended side effects.

So you can access the services, via the mobile data network coming from the outside world into your configuration, but switch to wifi, it stops? Have you changed your Wifi password or SSID?