Does this happen for or just one specific title?

"a4kSubtitles IMDB ID not provided" typically occurs when the Kodi media player cannot find or pass the unique IMDb identification number of a video to the a4kSubtitles

a4kSubtitles (and most modern subtitle scrapers) rely on "Unique IDs" (like IMDB IDs, e.g., tt1234567 ) rather than just the filename. This ensures that if you have a file named my.movie.2023.mp4 , the scraper knows it corresponds specifically to "The Movie (2023)" on IMDB.