iTunes Summary Not Updating

Using the PowerPress plugin for Podcasting, I am trying to update the iTunes Program Summary. I have placed new text in the iTunes Program Summary box under the PowerPress settings page. It’s been almost 2 weeks and iTunes has still not updated this new text. In other words, what you see in WordPress is not the same as what you see in iTunes. My feed is working because I can post new shows. Am I doing this in the wrong spot? Thanks