It might be that:
- The settings need to be tweaked under the gear icon of the Language Reactor extension
- The YouTube Video itself doesn’t have the language you are looking for
If the settings are selected to match what you want to see, and it’s not showing up, I may be missing something since I am a newer member.
Settings to Check to Potentially See What You Want to See:
- Audio Language
- Subtitle Language
- Translation Language
I hope this is helpful!