If you can’t subscribe to a podcast
When you click the Subscribe button next to a podcast in the iTunesÂ Store, iTunes downloads only the most recent episode of the podcast.
If you have a problem subscribing to a podcast:
If a podcast episode doesn’t download to iTunes when you click the Subscribe or Get Episode button in the iTunesÂ Store, the website that provides that podcast may be offline or busy. Select Podcasts and then click Refresh to try again.
If you subscribe to a podcast by entering its URL and the podcast doesn’t download, you may have entered an incorrect URL. Check the podcast webpage for the correct URL.
Some podcasts on the Internet may use files that are incompatible with iTunes. For more information, contact the podcast producer.