Regarding an Issue with the Reward Boost Feature

Regarding the issue occurring when using Reward Boost feature in certain stages.
Wed 06/19/2019 11:00 pm PDT
Dear players,
An issue was found where Reward Boost was unable to be used in the "Galactic Crisis" Story Event.
This issue has now been fixed.
All players will receive 1 Dragon Stone as compensation for the aforementioned issue.
* The compensation will be sent directly to your Gift Box.
We truly apologize for the inconvenience caused, and thank you for your understanding and patience.
We hope you continue to enjoy playing Dragon Ball Z Dokkan Battle.