I tried to play the game start from Feb 10 and the register website said: Registration is currently disabled while we make improvements to the game. I want to know when and how am I able to register back in the game.
There is no current eta for registration, because even the staff don't know for sure when it will be fixed. You can be assured that it will be eventually fixed though, just check back every 1 week or so. If you want to know more about it, the only information given to us is by Karven himself about the priority of fixing char creation and registration, these come either hand-in-hand with cs or thereafter, and since cs patch will be fixed quite some time later.... it is highly doubtful that registration will come anytime soon