In 19, all the other computers showed up and I could select them to stream to PowerDVD if anything was shared.
In the PowerDVD20 settings, where the DLNA checkboxes are, even with all the settings properly set, once selected, I still see no listing of anything on my network via the media tab, including the NAS. If you look at the first post on this thread, the poster says there is no longer a Device and Home Media (DLNA) drop check, I don't see that either, so it definitely has changed. It is just further down the list on the media tab. The DLNA function in PowerDVD 20 hasn't changed from PowerDVD 19.so not sure why you are having issues.