Did you copy these examples? Or did you write these new?
Compare the upper/lower case spelling between movie and subtitle files. These must be identical as well.
If that still doesn’t bring any progress, I think we need log files.
- activate debug logging (not ‘verbose’!)
- quit Plex Server
- wait 1 minute
- start Plex Server
- wait 2 minutes
- Perform the Plex Dance with one movie
- wait 3 minutes
- fetch log files and attach them here
