Try disabling all your other extensions to see if one of them is causing that problem with Last Pass.

Beyond that, try contacting Last Pass support. https://lastpass.com/support.php

Thank you for your response.

But whatever extensions are there, are being used for an year to say the least. But lastpass has started giving problem since only yesterday (I didn't install anything new).

That's why I'm not inclined to try this step. Excuse me pls.

Are there any error messages in the Browser Console about this extension?

• https://developer.mozilla.org/Tools/Browser_Console