Amazon has announced it will be lifting character creation limits on Lost Ark servers in order to allow new players to join servers they may not have been able to previously.
Speaking in a forum post (thanks, Massively), it was said server populations and queue times are being closely monitored so that character creation limits may return as queues begin to grow.
It was noted, however, that the list of servers with account limits "may change frequently," and that you will have to relaunch your client in order to access a server with a newly lifted cap.