I’ve setup phplist a few times in the past and never had this issue. This time, using the latest version, when I setup my subscribe page it is not displaying the form to allow for anyone to actually subscribe. Here is the link to my test site subscribe page.
Looking for suggestions to move forward. I made sure the default / public newsletter list is associated and that the subscribe page is active.
Same problem when you click Unsubscribe. No form is shown to allow you to unsubscribe.