Earlier today Daum posted an announcement that they had created a new member database for the game. Due to this change some accounts will need to be re-verified before you can play again. If you are re-directed to the page shown in the image below, you will need to confirm your I-Pin or Phone number for the account.
Newgameway offers re-verification for $3 if you bought an account from them. Any accounts bought after 24th of July will have a free re-verification. You can use this link and enter your User ID and Password to buy a re-verification: http://www.newgameway.com/product.php?a=timecard&gid=90
Due to the amount of people who will be buying a re-verification, please consider that it may take a while for you to hear back from them.