Apple Podcast

You have to be signed in in iTunes (or Apple Music on Catalina), have a pahyment method registered there, and thje computer must be authorised to play iTunes purchases. If you are on Windows you will need to download iTunes. If you are on a Chromebook you can't proceed.

You have to go to Podcasts Connect and it won't let you proceed unless you are signed in in itunes (Jor Apple Music) as I listed above. I can see no workaround for this.