R8500 - Nighthawk app do you have to be connected to the the router?

Netgear has set up a community forum specifically for the Nighthawk App product. Most of the people who watch that forum are more likely to have experience with Nighthawk App and know how to work it better than those of us who follow this "general router" forum. Might be more likely to find someone who has a solution if the question is posted there:
https://community.netgear.com/t5/Nighthawk-App/bd-p/en-home-networking-apps
Good Luck.