Anyone here play FLYFF (Fly For Fun) version Japanese.

For some reason i can't log into the game after i registered already at the website for an account. People said that US IPs are Banned. But alot of people who posted at other forums said that pepople in the US can play Japanese FLYFF...soo anyone whos played this version before please i need help..because it aint working for me and i really want to try this version.