I use evernote on my galaxy and Mac, and everything was working properly.
Because my mac is a bit old, it sometimes freezes out of blue, and rebooting often works fine.
One time, the freezing occurred while I was writing notes in evernote, and I rebooted as I normally do.
When I started evernote, everything was reset: the notes, view setting(?), and trashcan. The font setting and other settings were remaining the same.
All the other application were working fine, so I checked web evernote and phone app, and all the notes were there.
The sync button on mac seems to work