For Accounts Using LINE@ or the Previous Platform of Official Account Manager: How to Edit Account Pages
The edit page will change after April 18. To edit the account page after the update, you must log in again with your LINE account.
When logging in again, make sure to select "Log in with LINE" and enter the same email address and password as those for Official Account Manager.
In Official Account Manager, click "Account page" from the menu.
This brings up the login page. Select the option to log in with your LINE account.
* Do not select the option to log in with a business account.
Account list appears once you are logged in.
Select an account to access the edit page of "Account page."