This message is displayed when there is an inconsistency in the data in the device when updating the application.
If the message appears, please tap "Log out" and login to the application again.
*When you log out, the data before the upload to the server is discarded.
If you don't know your login details, see the related article.
Related:I can't log in. What should I do?
https://help.teachme.jp/hc/en-us/articles/900005507706