Hi, we have heard there is a issue but Last Pass has it's own Support Page, Email and I think a Forum : https://forums.lastpass.com/ As the Developers of this Extension they need to find out what is going on with their product and help you get it working again. You can get their info off of this page : https://addons.mozilla.org/en-US/firefox/addon/lastpass-password-manager/ Though if you are running any ad blockers or these Security Software products : Avast/AVG, Kaspersky, BitDefender and ESET, sometimes McAfee. You should disable them and try again. If that is the issue please see the Community forum of that Product. Please let us know if this solved your issue or if need further assistance.