Currently, we have confirmed an issue with "The Navel (Hard)" which makes it possible for unintended strategies to be used to complete the dungeon.

As a result of this, the "The Navel (Hard)" will be temporarily closed off until a fix is made. The issue is expected to be addressed in 4 to 5 hours.

We apologise for any inconvenience this may cause and thank you for your patience.

*Follow-up: Sep. 13, 2013 7:20. (GMT) The fix has now been implemented, and “The Navel (Hard)” is reopened for play.
We apologize for any inconvenience this may have caused.