If you have a character creation email, something that says your character is like 'Wilson2352342' or 'Poser234123' then you can just connect to the game using the login and password in that email.
https://moo.sindome.org <--Click connect manually.
Or, if you want to confirm your character isn't in your account, log into the website, goto the menu in the top right, click manage characters and see if your character is there. If they are, click the Play button.
If you do not have a character email, you can connect to the game manually as stated above, then 'connect guest' when the login screen is shown. Then use @register.
If you still have issues, please email [email protected] with your registered email address so we can find your character and send you the info.