I am trying to create a proper subscription form for my case:
– I use Autoresponder to create series of homeworks for my various students.
– I have Physics series, Chemistry series, Maths series etc.
– Only students that are attending the appropriate lessons (Maths for example) will get the “secret” link from me to a page with a form that allows them to subscribe to Maths series of homeworks, which is hidden to public. In another words — I need the list to be hidden to anyone else.
In online manual I read, that [newsletter_form] shortcode can specify subscribers lists by “lists” parameter, but it also says: The specified lists must be “public”, not marked as “private use”. But if I set the Maths homeworks list “Public”, anyone can find it on his profile page (and can subscribe here which is what must not happen).