Even though the communication status is normal when the app is started on iOS, the message "Communication failed. Please check the network connection status." Is displayed, and the problem that the app cannot be started has been confirmed.
If this event occurs, it may be resolved by uninstalling (deleting) or reinstalling the application.
At that time, if you uninstall (delete) the app without registering your e-mail address, all registered information such as past boarding history and favorite points will be lost, so please be careful.
Also, as one of the causes, when backing up to iCloud when changing models, if "Keychain" was not the target of backup, if you restore the data and use the application after that, the state will be invalid and the application can not be started. Is known. If you have the state before backup, you may be able to solve it by turning on the keychain, backing up and restoring again.
Other causes have also been reported, and we are investigating the cause and plan to correct it as soon as it becomes clear.