I joined the stress test server DE 1-4 (IP 185.62.205.36:2402) on night time (between 18:50pm and 19:05pm on stress test #17) and suddenly got the error message "character locked in database / you were kicked...".
I wasn't able to play because the issue occoured right after I was in a position queue. Then it seemed like I would spawn but I couldn't see anything, just the error message popped up.