The BEST EVER is bitwarden-password-manager

https://addons.mozilla.org/en-US/firefox/addon/bitwarden-password-manager/

Once you forget your master password, there is no getting any of your passwords back. I switched to bit warden for that reason.

Use bitwarden instead, free cross platform supported and works about a million times better on android.

This addon no longer works in private mode. I click the lastpass icon on the toolbar and the menu window opens below, but it is totally blank. Firefox and all addons are up to date. I tried clearing cache, uninstalling/reinstalling the addon, rebooting, etc. but it still isn't working in private mode. Please fix this!

Wont let you sign into more then one Device, unless you pay

I've been using the LastPass free version for several years and it's terrific and just keeps getting better. It's so good, in fact, that I upgraded to Premium just because it's one of the handiest tools on my PC. It's home not only to my PWs, but also all kinds of information I want safely kept somewhere.