FYI, this is the version of the Plex Web client. Scroll down to see the server version, in Settings → Server_Name → General.
Plex Documentation
→ Your Media → Naming & Organizing Your Movie Files
→ Libraries → Advanced Settings for Plex Movie Agent
Use the Plex Movie
scanner and agent. The other, legacy agents are no longer under development and will eventually be removed.
The settings in Agents (Legacy) do not apply to the Plex Movie agent. To change settings for the Plex Movie agent, edit the library and select Advanced.
Name and organize the movie per Plex requirements. It matched immediately on my system. You may need to Plex Dance the movie to remove incorrect matching information from the Plex database.
/movies <-- folder added to library
/Brothers (2024) <-- movie_name (year)
/Brothers (2024).ext <-- ext = mkv/mp4/etc.