Alpha testing ended a good couple of months ago, so Alpha accounts and the Alpha Client won't work anymore.
The game has since been in development to be revamped with a lot of changes/improvements, and is said to be entering a Closed Beta phase in it's home country, with the new changes, pretty soon from now. No news on when our version of LO will have a CB though, but, it's looking like it won't be too long a wait now.
Read LO's latest status update
(posted in August) if you haven't already, for more information.