If you don't login then the template is just going to the root folder before the users directory, and it does so using the default LDAP credentials
But the scan to home that is populated by their login comes from the credentials here, and these settings are where they went wrong.
Typically Logged In User is the correct setting to choose (Because if "Dave" can login he absolutely should be able to get to the "Dave" folder), Whereas the System prompt would require that the LDAP server username can access the "Dave" folder, which is much less likely.
And this needs to be on for sure, else it won't even try to pull Dave's information.
And how cool would it be to find out Dave is the name of the person who contacted you about it ;-)