Notebook crashes every time.
Installed the app via the Mac App Store. It launched all right at first, then when it got to a screen trying to push me to two-factor authentication, both the skip link and the "not now" button did nothing. Eventually forced to hit "set up two factor authentication". The app immediately crashed. Every subsequent launch it crashes before bringing up the screen. Tried rebooting the Mac, uninstalling the app and then reinstalling it but still the same problem (which means Notebook is leaving some kind of junk on my system even when I uninstall it.)