Loss of autofill in Firefox

Until a few days ago, our Firefox had a Identity Safe Vault (Open or Closed) icon and when we opened it we had autofill of our sites.  Chrome has only shown the login usernames and passwords for us to manually insert.  Now Firefox is like Chrome in that we do not have autofill.  AND oddly, it appears some of the passwords are wrong so we are unable to access our important sites.  We are not aware of any updates having happened that would have obliterated the Vault from the toolbar...other saved icons are there.