Lastpass was relatively solid until Logmein bought it. IT has been going downhill ever since, especially with Firefox. It seems to break on every update for the last several months. Latest is that you cannot edit your vault if you are using Firefox.

Time to move on. Unfortunately I like the Families option, but if it does not work 20% of the time it is more trouble than it is worth. I am also getting an increasing number of sites where Lastpass simply does not work or sends you in a loop that results in accounts being locked.

Their support also sends you in an endless loop. They are now worthless. Took me 4 months to resolve a billing error on their side, and even then they still shorted me a week, even though the exact subscription dates were well documented.