I’m trying to add Korean translation that ovveride the english. I created the po and mo files as instructed and added them in the bbpress language folder using FTP. But nothing changed on the front-end? Any idea what caused this?

Here is what I called my files:
bbpress-ko_KR.po
bbpress-ko_KR.mo

[@robin-w Moderator 5 years, 1 month ago]

that all looks good – I cannot say why it is not working in which directory did you put these?

[@juhametsakallas Participant 4 years, 11 months ago]

The proper location of translation files for bbPress was a mystery for me too. It looks like, that for bbPress 2.6 you only need to put them into (a change from previous version)
…\wp-content\languages\plugings\

And yes, if you download from

      https://translate.wordpress.org/projects/wp-plugins/bbpress/

you get a po file with a wrong name, like
wp-plugins-bbpress-stable-fi.po
which you must chagne.