Same thing for me too. All notebooks are gone but the notes are still there. Have been emailing Evernote for several days now but they are unable to resolve this.
Perre
I use MacBook Air and after the latest update of Evernote for Mac, all my notebooks disappeared, however, all notes remain. They are in "all notes". To avoid creating new notebooks, is there any way to get the notebooks back?
Greetings
Perre