Downloaded and played on vlc. No subs. Check video options, set subtitles to track 1. No subs. Checked putlocker stream. No subs. Downloaded from mega, no subs. Set subtitles to track 1 again, no subs.
Screenshot below of the file running subbed in VLC, didn't set subtitle tracks, just dropped the file into VLC. You're probably missing an MKV codec of some sort since the subs are embedded inside the MKV. Try a codec pack like K-Lite etc. Or updating your player if you haven't already, VLC etc. tend to bundle codecs with each version so maybe the most recent had a new set.
If it's not subbed, don't say it is
I think there'd of been a post before yours saying something similar if that were the case...