*UPDATE*
Korea is on a holiday today, but I did manage to have them look into this and it has been confirmed as incorrectly set. Today it appears that World at War and Blitz have been boosted with Select Mode not being set in accordance to the calendar.
We are deeply sorry for the mixup and will provide an extra calendar day for the error. Thanks to everyone who reported this.
-Randy
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Please note that the select mode rooms are currently not getting the 200% boost.
Please be patient while this issue is addressed.