The Past Pages feature works only for logged in, registered visitors.
If you have already registered, then all you need to do is Log In. Otherwise, you will need to Register in order to enable the Past Pages feature.
We use "cookies" to implement Registration and Log In. We send a request to your browser to accept a cookie when you register, log in, or log out. This design prevents you from receiving constant cookie requests, which can be annoying.
If you want to know more about cookies, click here