I have a friend that had the same problem, and apparently there are a lot of similar posts around the Nexon forums.
It had happened to me long time ago to my evan, and it got fixed after a few weeks. I think my problem was that I was I was in monster park, I was almost done when server went down for an unscheduled maintenance (I didn't know there would be one). My friend had just accepted the battle invitation for the Class Warfare event when dc'ed and couldn't log back on that character for some good 3 weeks or so.
Nothing you can do now except sending a ticket
It had happened to me long time ago to my evan, and it got fixed after a few weeks. I think my problem was that I was I was in monster park, I was almost done when server went down for an unscheduled maintenance (I didn't know there would be one). My friend had just accepted the battle invitation for the Class Warfare event when dc'ed and couldn't log back on that character for some good 3 weeks or so.
Nothing you can do now except sending a ticket