Same here, stuck at the 2nd task. Keeps rejecting. I suspect that there might be more steps to the task then just getting to lvl 6, as it is too simple. But the quest details doesn't state what else needs to be done.
mine is still waiting verification but I believe that there are some problems.
in 3 steps
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You CANNOT EVER complete the level 6 castle quest. It gets automatically rejected every time, no matter how you go about it. Do not waste your time on this quest! This is not a new issue, judging by the other threads. Just thought I'd make a new thread to show how recently this is STILL a problem.