Missing subtitles

Hi,
I’ve bought a wetek play 2, and installed kodi. And was trying to use it to watch some videos, instead of my tv dlna (since kodi as better quality and format support).
After I’ve added the network folder, where i keep the videos with the srt files as same name as the video file, the video has no subtitles.
I tried to open the subtiels mannually, but still i couldn’t. My tv (a 4-5 year old samsung plays the srt with no problem and automatically).
What am i missing?
Thank you