Hey morti,
Unfortunately with my setup I'm unable to upload subs, even from opensubtitles.org. I have no trouble downloading the srt file but I have issues uploading it to the site. My setup isn't that great, I use my phone to cast to my TV but my phone is old so that's most likely why I have issues with uploading srt files lol. I don't have any other way of trying to upload srt files (no laptop, computer etc) so I'm kind of stuck in that department per say. Anyways, thanks for all your help and the info!