Entries must be made “by class”, so please check again to make sure you have entered the correct class. If you have already completed your entry, it’s possible that you are logged in with a different email address.
If you have already taken a class in the past and would like to take another class, you will need to re-register for
If you have already completed your entry, it’s possible that you are logged in with a different email address. Please try logging out once, then log back in using the correct email address you intend to use this time.
How to log out
https://support.precena.co.jp/hc/en-us/articles/37884489804953
How to log in
https://support.precena.co.jp/hc/en-us/articles/36964478632345