I've used LaspPass for years, however it no longer works properly since Firefox v57 (now v58); most specifically the Autofill function. Very disappointed. Similarly, the browser extension on Android doesn't seem to work either, and the App doesn't recognise Firefox most of the time.
I've seen many, many complaints about Firefox issues lately. Recently I saw something about LastPass no longer providing support for Firefox? If this is true, I may have to migrate to another password manager.