itunes preview not displaying current feed

Hello,

Recently launched a channel. 20+ episodes.

https://itunes.apple.com/us/podcast/podcasts-free-broker-school/id1103465950 is our channel.

This is the feed:

http://freebrokerschool.com/category/podcasts/feed/

These were the initial 3 episodes I did. I went back 10 days ago and updated to audio only versions to save data for folks.

The podcast app and desktop iTunes show most recent audio episodes, but this preview never updated. Can you tell me how to kick the tires on this to have the freshest feed show up in preview?

Thank you for your guidance in advance.

Susan