The new Discover option seems to be missing region-specific content.
I’m aware the feature is supposed to adjust for device region, but it currently doesn’t do so correctly - as an easy example, the Ghibli movie Ponyo is available on Netflix in my location (Croatia, but I believe it’s available in most of Europe), I confirmed this by playing the movie on Netflix just now. But when I search for ‘ponyo’ in Plex Discover - both in the Windows Plex app and my smart TV Plex app - I get back zero results.
To clarify: the search of course finds the movie’s IMDB entry, but it doesn’t offer it for viewing on any streaming service (when it’s specifically available on Netflix).