She posted this because she needed Korean-English subbers.
For other languages, you should contact the moderator of your language, who is responsible for recruiting his or her language team.
The whole list is here: https://www.viki.com/tv/28633c-under-the-black-moonlight?q=Under%20The%20Black%20Moonlight#modal-volunteer
It includes a Romanian moderator, groovealexandra, a Portuguese moderator, simonysilva and a German moderator, leejihye.
If you had read the thread, you would have seen I posted a similar reply five days ago.
@alice_roselli, I think that maybe it would be better to modify the title of your post, otherwise you'll be inundated by requests for subbing in all possible languages, LOL! It seems nobody is reading your first post, just the title.