Hi Ella,
This issue was posted to the Service Health Dashboard (SHD) as incident
SP210229 starting at April 20, 2020, at 2:02 AM UTC. The user experience of this incident is:
Users may experience delays when utilizing OneNote. This issue may affect EDU users in Australia when accessing OneNote Class Notebooks or performing sync actions. Tenant administrators can view current information and updates in
Service Health Dashboard (SHD) via the link here.
https://admin.microsoft.com/AdminPortal/Home#/servicehealth
Moreover, I checked your account in our tool and I can see that your tenant is affected with this service incident.
I will be closing this thread from further posting, so the affected customers can easily identify the information. You may subscribe to this thread or
refer to SHD for the updated information. I will also post back here once the issue has been resolved.
Thanks,
Neha