This site and Discord are for the Taiwanese version of the game.
If you want help with the Japanese version find a Japanese discord.
JP players are welcome to join but this isn't the place for assistance with that version of MHF.
Discord is not a replacement for reading the main site, if you can read this you can read the site.
Seriously, read the site.
This does not redirect. Read the page and then, click on which region of the game this discord is for.