I'm still confused how to copy the password from one browser to another

regarding FF ESR v52.7.3 , LastPass has been broken due to the update. Following @Iconoclast's advice resolved the issue for me on OSX with only restarting the browser. ie, remove the lastpass extension, restart browser, install lastpass extension from lastpass.com (not adddons.mozilla.org), disable updates in `about:addons`.

The update on 03/30/18 broke the Lastpass for Firefox extension if you are using Firefox ESR (Extended Support Release) which is a slightly older version of Firefox. The new extension update does work on the newest version of Firefox. TO FIX THIS PROBLEM: Go into your Firefox addons and remove the Firefox extension. Close Firefox and log out of Windows or restart the computer. Log back in, then start Firefox. Go to the LastPass web site and install the LastPass extension from there, It will know to install the older version of the extension that is still compatible with Firefox ESR and older versions. Then you can login and everything will be working. Go into your Firefox addons again, click on More then scroll to the bottom and turn the automatic update to OFF. You can check back in the Firefox forums to see when the problem gets fixed so you can know when to update the addon again. I gave the extension 4 stars because Firefox and LastPass have trouble getting along. Of course Firefox has trouble getting alone with pretty much all addons these days. When the LastPass extension is working it's awesome and I rely heavily on it and I'm a Premium Subscriber, but I am really sick of the problems Firefox has with addons as well as them taking away the ability to customize the UI. Anyway, I hope this helps you all! Peace.

Ich habe noch keine konkrete Meinung - später.

Love this app. pro user for almost a year. not perfect but always being improved. Thanks LastPass!

It sometimes doesn't want to insert my login details, but v4.9 works only with Firefox Quantum for me.
I normally use Cyberfox, based on Firefox 52 ESR, and had to revert to version LastPass 4.7.1 since 4.9 does not work in Cyberfox.

Generally, I like this tool. It's not much hassle and most of the time, it stays out of my way.

why does the button "remember password" have no effect?

Habe es soeben installiert.

Nice

新版的介面反而不好用，例如我想要複製帳號或密碼，這個選項之前的版本有，但目前的版本卻得進入編輯畫面才能個別複製帳號和密碼變的很麻煩。

Très pratique

When it works, it's a pleasure, but often times it doesn't. EDIT: Apparently the experience is rather consistent when using the add-on with the stable version of Firefox. There are still minor issues but overall it gets the job done. Android version on the other hand straight up doesn't work