I can no longer log in from a device I was using with Access Authorization Management (formerly: Device Restriction). What should I do?

The following causes are possible.

• The identification code (formerly: device ID) was changed due to a device change, app reinstallation, or similar action
• The device registration was deleted

Please follow the steps below to obtain the identification code of the app you are using, and contact your group administrator or group sub-administrator.

　▼Obtaining the identification code (device ID)
　Mobile app: https://teachme.jp/8/manuals/9920280