Downcast & Password Protected Podcasts

iOS and iPadOS

I have just subscribed to the paid Kim Komandow Show podcast. No difficulty subscribing using IE11 on my pc. However, when I subscribe using downcast on my iPhone iOS 8.3, the episodes show up properly.Unfortunately, I cannot play an episode. I get the message "preparing in progress". I was only asked once whether I wanted to download or stream. I thought this might be a timing issue, but I have certainly given enough time for a download or buffering stream. Any Suggestions would be appreciated.