To fix subtitle issues on your Smart TV, try the following:

1. Check TV Settings: Check that you have enabled subtitles in your Smart TV settings.
2. Restart the Smart TV: Reboot the system and try again.
3. Update the TV Software: Make sure your Smart TV software is up-to-date.
4. Re-download Subtitles: You may need to re-download or reset the subtitles.
5. Select the Right Subtitles: Make sure you have selected the correct language for the subtitles.