Notebooks missing, some notes in 'All notes', new system

Using 1.0.216 ( on MacOS 10.15.4

I have Joplin on Linux, iOS, and macOS systems already using WebDAV for syncing. They all have been working great. Today I installed on this new Mac and configured it to sync. The sync seemd to work fine and completed, but the Notebooks section is empty. I should have two top level notebooks, each with sub-notebooks. Can anyone help?

Thanks in advance!