A number of people have complained that single or multiple episodes, which are correctly in the feed and appear when subscribing, are not appearing in the iTunes Store.
Support have confirmed that there is an ongoing problem. They say that sufferers should contact them and request a reindex; that should solve it for that particular episode. Go to https://itunespartner.apple.com/en/podcasts/overview and click the 'Contact Us' link at the bottom of the page.
iMac (27-inch, Late 2013), OS X Mavericks (10.9.5), 13" Macbook Pro 2010 10.6.8
