You can find your Podcast feed URL in your Podbean account "Settings"->"Feed" page. 

  1. Normally,  your podcast feed URL is https://subdomain.podbean.com/feed.xml.
  2. Before you start to use the feed URL, please validate it at http://castfeedvalidator.com
  3. If there are errors in the feed,  please fix them.  
  4. Moreover,   please make sure you have published at least one episode before submitting your feed to iTunes.