Notice of major version upgrade of learningBOX2.21 and server maintenance

Thank you for using learningBOX.
この度、2023年3月22日（水）に共用サーバー環境のバージョンアップに伴うメンテナンスを実施いたします。

Please note that you will not be able to log in to the shared server environment during the following period.
We apologize for any inconvenience this may cause and appreciate your understanding.

■Period of implementation
　2023年3月22日（水）AM2:00～PM5:00
　*The end time may vary depending on the status of the work.
　　Please understand this in advance.