"This session is cancelled: attendance cannot be taken."
Where: Finish, on the attendance sheet.
Why: the owner cancelled the session (for example a public holiday), sometimes while you were taking attendance.
What to do: if the class took place anyway, the owner opens the session in Schedule and taps Restore; attendance can then be taken.
Didn't find your answer?
Write to bonjour@martialnote.com from your account's address, saying which screen is involved and the message shown. Support is by email only, with no guaranteed response time. Never send information about your students.