Regarding Server Connection Error

Regarding the server connection issue.
Fri 08/18/2017 03:15 am PDT
Dear Players,
Due to a server error, from 8/17 14:30 to 8/17 15:59 PST the game was not accessible and the "argument_error" message was shown. This issue has already been fixed.
We truly apologize for the inconvenience caused.
Players who encountered this issue during the above mentioned period will receive 1 Dragon Stone as compensation for this issue.
We are truly sorry for any inconvenience caused.
Thank you for your patience and support.
We hope you continue to enjoy playing Dragon Ball Z Dokkan Battle!