If your phone number was already registered when you registered for a new account using your phone number, it is possible that the account is currently held by the person who previously owned your phone number.
In this case, we will ask you to register a new account using another method, such as LINE login.
If you are unable to try other methods, in accordance with our Terms of Service, we will force you to cancel the account created by the previous owner, and we will take action so that you can use the relevant phone number for new registration, please contact us.