What's wrong with those reviews... Bewertet mit 5 von 5 Sternen
It is really surprised to see an addon have been kept on rating low due to comparison with a commercial product (its free version is almost useless) associated with a bulky tool bar.
Such reviews are really not helpful for users to see whether this addon is buggy or if there are any other better alternatives. What a shame on OSS culture!
BTW, thank you for developer's suggestion to us to have a look on the discussion on Secure Login + Autofill Form.