If you are unable to see subtitles, then please check the below points:-
1) Please update the Teewe device by restarting the device and make sure that your Teewe device has access to the Internet .
2) Restart your Teewe Desktop Application.
3) Kindly ensure srt files are in the folder that is added in desktop application.
4) Please try to use srt file as subtitles.