Nighthawk-app.com is the default web address used to download Nighthawk app. It is known as the most reliable and secure app through which you can easily control the home WiFi from anywhere and can do WiFi router setup using Nightahwk app. However, there could be the possibility that you may face different issues during the process to install Nighthawk app and you are unable to do WiFi router setup using Nightahwk app.