You can check the following information registered in the Hobonichi Techo App on the screen that opens by tapping "Menu" at the bottom right of the app screen.
Nickname: Tap to change.
Birthday: Once set, it cannot be changed. You can delete it.
Area of Residence: Tap to change.
The Hobonichi Techo App requires you to register and log in with a "Hobonichi ID". You can check and change your registered "Hobonichi ID" account information by following the steps below.
Tap "Menu" at the bottom right of the app screen.
Tap "Settings & Payment Information".
Tap the "Change Hobonichi ID Settings" button located in the email address field at the top.
Log in with your registered "Hobonichi ID" to open the Hobonichi ID account page, where you can check and change your account information.