The LastPass app on Mac and therefore also the Safari plugin do not work. When I try to log in, it shows me the animation of a safe unlocking and then goes back to the login form. LastPass on Chrome on the same computer works.
I've deleted the app several times from my laptop using tools that remove all associated libraries as well. I've reinstalled from https://lastpass.com/misc_download2.php (using both the Safari and the Mac App links).
LastPass on my iPhone and iPad work fine.
I reached out to support and they said they would get back to me but now the support login is broken as well. (see https://community.logmein.com/t5/LastPass-Support-Discussions/LastPass-support-login-is-broken/m-p/303284).