A few troubleshooting steps to help with your OneNote spreadsheets:

1. Check your format settings for Excel in OneNote:
   Go to the File menu and select Options. Check the settings for Excel options to confirm compatibility.
2. Check Mac Excel:
   Make sure that you are using the latest version of Excel on Mac for best performance.
3. Check source file:
   Make sure that your Excel source file has not been changed from the initial one.
4. Reinsert/Update file:
   Reinsert the file or copy and paste to see if it updates properly.
5. Check Sync:
   Go to Tools in the OneNote toolbar and select Sync to confirm sync settings.