Try creating a password without special characters, I'm not sure which cause the issue.

_________________
Returning/Existing Player? Trouble logging in? Click here |~| New player Gil guide |~| More Troubleshooting

That was it! I removed the special characters; password is the same length, but now I can log in just fine!

Although, now that that problem is solved and I created a game account, it still won't let me log in... =/

Wait... I did the same thing... But this time I made my password far less complicated and I could log in just fine..
Strange. There definitely seems to be something up with the passwords for account setup. Perhaps there should be an updated ruling on what is acceptable for such creation..