this was a problem before the "dlna off by default" update.
although ive turned dlna on and still the problem remains.
i click the dlna tab and my modem will show up, sometimes my pc with show up, but most of the time, my plex server will not be shown in the menu.
when i can find and connect to my plex server, it will often lose connection and disappear after about 10 minutes. but i can then close the app and open up skybox and my plex server will show up.