Rated 4 out of 5 stars

continue de me demander le mot de passe apres la désintalation

-EDIT :
Thanks for answering, gave back some stars :)

This review is for a previous version of the add-on (1.29.1). 

https://support.mozilla.org/kb/use-master-password-protect-stored-logins

and then please try understand what this extension actually does - it explained in the description.