Add-on works as advertised, I don't know what everyone is complaining about. Maybe they don't know how add-ons work? Anyway, the most common complaint is they cant get it to stop auto filling. The solution: Goto Manage Extensions>choose icloud passwords>choose Preferences>uncheck In-Page Autofill.

Problem solved.

Want to use FF's own password autofill? Goto Manage Extensions>choose icloud passwords>choose Preferences>>uncheck Turn off Firefox Autofill

Dont want any autofill from either? Goto Manage Extensions>choose icloud passwords>choose Preferences>uncheck In-Page Autofill>check Turn off Firefox Autofill

Want to use both password managers? Goto Manage Extensions>choose icloud passwords>choose Preferences>check In-Page Autofill>uncheck Turn off Firefox Autofil

It's not that complicated, people. It's like dealing with children around here. Sheesh. It works. Firefoxes works. Roboform works. LastPass works. Just pick one or don't; I'm not your dad.