Old notes missing on Windows 10 Desktop App

[DJ1420 0]

I have Evernote running across 4 devices: my Android phone, Android tablet, Windows 7 work laptop and Windows 10 home computer. The desktop app on my Windows 10 home computer has not retained any notes before December 2015. All other devices have the earlier notes, Evernote Web also has the earlier notes. New notes are synced across all devices, including the Windows 10 PC. I re-installed Evernote on my home PC and that did not solve the problem. How can I solve the problem?

 

Thank,

Dan