An amazing plugin.
I want to share it on mcbbs for my Chinese friends. I will not redistribute this plug-in. I just post a post introducing it there. People will still come back to download it under your post.
In addition, I tried to run it on 1.15 and it worked ( :
About translation, I haven't found the translation document you created yet. Maybe you can create a lang.txt or lang.yml to let the players choose the language