To download the podcast list from the PMS database, a token is required; see Podcasts and Web Shows are going away on April 15, 2022
To find out that token, refer to this article => Finding an authentication token / X-Plex-Token | Plex Support
However, this does not work for home users. The step “Browse to a library item and view the XML for it” is impossible because you are not offered the option to view XML with a home user.