Thunderwacker

Hi. I just installed the Nexus mods app. I suspect something is wrong as under the Menu there is the Home label and under that there is My games and My loadouts, thats it. There are none of my games listed, there's no scan option that I can see, in fact there is no interoperability I'm on Windows 10. I can see there is a download button in the bottom left and thats it. I've looked through the settings and honestly I have been unable to determine how this software is supposed to work.