Running nitroshare on fvwm

I’m trying to run nitroshare on fvwm. When I run it on Ubuntu, a little icon shows up on the menu bar top right. In principle, in fvwm, the icon should show up in my stalone tray, but it doesn’t. The program is supposed to be so self-evident that there’s no help script, no online instructions, it’s just supposed to work. But when it doesn’t… I;m wondering if any fvwm users have had better luck than I with this? Or suggestions as to how to bully the icon into the stalone tray?