subforum's link changed to a different language

Should the default forum link should be something like
http://XXXXXXXXXXX.justgoo.com/forum-f6?

2 days ago it has changed to
http://XXXXXXXXXXX.justgoo.com/論壇-f6 (Traditional Chinese) - thus a lot of users cannot assess the forum due to "The page isn't redirecting properly"

I have set the language of the forum to Traditional Chinese but changing it to other languages just made the link into some weird language.

Any input?

I don't know where you are seeing this. I clicked your link, and navigated throughout your forum, but did not see the url change to have those chinese characters listed.