SmartPSS interface is tiny because of your screen resolution. I have that issue on my 4K monitor, too. SmartPSS is not an app that is works well with Windows 10 on higher resolution screen. Use a monitor 1920x1080 should give you enough screen size for SmartPSS. Use latest version of Pale Moon browser, and you won't have a problem with accessing either the NVR or your cams. If you plug you cams in the built-in PoE ports on the NVR, that is a closed network that you can't get to, so it won't connect.