I reached out many times about this topic. I can see that people have visited my site but I don't know who. My guest book has a visitor password but even with that-the site doesn't list who log in to my visitor site(even though they have a visitor password. I would like to see & know who visited my site and who log into my site using the visitor password.
You need to change your Privacy from "access code" to "membership model". Once you have signed in as administrator, this can be found by selecting "Privacy" under "Tools". You will find an explanation of what this means there.