G-Pa Ernie

In my Premium Evernote account, all my notes in my Windows desktop system have disappeared. My list of notebooks still shows up in the left pane, but double-clicking or clicking on any notebook has no effect. I can select a notebook in the pulldown menu in the middle pane, but that has no effect, either. It is stuck at saying "Viewing 0 notes in All Notebooks."

In the menu bar, "New Note" is highlighted in blue, and nothing I do can change that. Every search I try is futile.

I click "Sync" and the arrow goes around, but nothing happens.

This has worked properly for three years, and stopped working just now.

My notes still appear in my iPhone.

This is not good at all...