Please help! All of my classes seem to have vanished from my planner. They were showing only locations but now not even they are showing.
Really hoping that someone can help me! I can't even access previous lesson plans.

Hello Cbaxter2088,
From the last planner image I can see that the periods are not configured as classes (the class parameter is empty), only its location is set.
I'm not sure why the planner does not even show that location though.

Before doing any additional changes, you should make a quick backup. Tap on the backup button on the ruler and wait for the 'backup completed message to appear.

Restart now your iPad by pressing both the home and top buttons simultaneously for a few seconds

Your lesson plans are safe. They are still there even if the calendar has been erased or modified.
If you open a particular class and go to its daily diary - the red ribbon below with a 1 - you will see your notes.

In order to get the planner back, you just need to configure again the schedule&calendar with
its classes and periods and the lesson notes with its files - if any - will show up again.

Thank you. i worked out that was my only option and reset up the calendar from September and my lesson plans have returned. Do you have any idea how the class parameters all vanished? (Just so I can avoid doing it again!)