This is the error I constantly receive:
The owner of addons.cdn.mozilla.net has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

This site uses HTTP Strict Transport Security (HSTS) to specify that Firefox may only connect to it securely. As a result, it is not possible to add an exception for this certificate.

Up until quantum , this plugin worked fine. Totally unusable now ( logouts/missing features/slow). Maybe Firefox devs should fix this instead of waiting for Lastpass, because no one will use your browser until this is fixed.

Well the import doesn't work so it's completely useless for migrating everything I have from a local KeePass database. Definitely won't be paying for premium.

I'm a long term user and paying customer. One could say I really like Lastpass. It's a very useful password manager and has been part of my digital life now for quite some time.
But...
PLEASE FINALLY FIX THE FIREFOX ADDON FOR ANDROID!

Rubbish. Even after it being installed in Firefox it is saying it is not installed when trying to recover account, stupid waste of time and dangerous.

I'm done...headed back to Google Chrome b/c the Lastpass Firefox plugin is so ridiculously broken. Sadly I guess that gives Lastpass no real incentive to fix it if we all flee back to a platform where it does work.

Constantly being broken. Do you not test things?
Google Authenticator doesn't even work in v4.10.1.0, code entry page loads blank with javascript errors: TypeError: getBG(...) is null 1 toolstrip.js:1:10124

And you still haven't fixed not being able to select other accounts from the login dialog. The dropdown list can't be opened by clicking if there's an email filled. That is not how dropdown lists work.

LastPass is seriously crippled in Firefox compared to Chrome. The latest version of LastPass in the latest version of Firefox Quantum, can't even display the pop up window in the extension, to let you log in. Add to that the fact that the option to copy the username and password miss from the menu when you select a site from the extension search (which works just fine in Chrome). Add to that the fact that even though the extension gets updated once every one to two months, none of these problem, existing from about a year now, have been fixed. LastPass is the only reason making me want to switch back to Chrome all the time. Just Fix It FFS!

Das Lastpass Addon funktioniert mit Android Smartphones nicht!

The plugin does not function correctly in Firefox, was resetting passwords and non of the new random passwords were retained (the plugin timed-out), so I had to reactivate these accounts by hand, by password recovery options of these sites.

Last pass works as expected for the most part. The extension does not retain email or preferences from firefox quantum.
(and yes, I have enabled the setting on third-party cookies). Older versions work.
Because of this problem, the current version works but is not practical.

Lastpass in firefox on Linux machines does not have a copy password function after v57

Impossible to install, being sent from one to another panel, enough! I tried it 3 times..

Masterpasswort vergessen ... und die Widerherstellung funktioniert natürlich nicht. Ständig Fehler auf der Website .. kann kein neues Passwort erstellen... also für mich totaler Schrott. ps. den Hinweis, das Konto zu löschen wenn man sich nicht mehr einloggen kann, den könnt ihr euch sparen !! mach mich richtig aggro sowas dämliches

I can't find my vault

As many other are reporting, the experience with this app got a lot worse that it used to be. Can't login directly from the icon - when trying to type the password field it closed the pop up without giving the change to inserting it.

The only workaround possible is actually login into the vault in order to get the passwords and manually copying them into the websites. I use laspass for many years and it's never got so bad. Please resolve these issues, thanks.

It is not working on Firefox anymore, and they never fix it.

not working for linuxmint

Can't open a site settings -- white screen.