Hi,
I created the subtitle plugin for Subf2m.co. Please install and let me know if there is a problem.
subf2m.co is a subtitle site, The database of this site is acceptable
Source Code: https://github.com/nRafinia/Emby.Subtitle.Subf2m
Binary: https://github.com/nRafinia/Emby.Subtitle.Subf2m/releases/latest