Hello Harry!
You are on your way to making a Podcast! Note: There have been some reports about wordpress.com users unable to mark each episode as explicit:no or explicit:yes. This is important- consider speaking with Wordpress.com they offer that ability before you proceed.
It seems your podcast has one episode with a link to an image:
http://castfeedvalidator.com/?url=http://feeds.feedburner.com/wordpress/hquE Since the iTunes Store is looking for audio, video or documents, it will not accept your Podcast submission.
Did you read support documents at Wordpress.com on how to create a Podcast? Checking your site, there does not seem to be a category for Podcasts, which Wordpress.com usually recommends.
https://sondagsbarn.wordpress.com/category/uncategorized/
I recommend getting support for the software that is making your Podcast feed. Since this is Wordpress, speak with them about creating a podcast feed with audio content in your episodes.
Once you have created your feed, test it in iTunes desktop:
File > Subscribe to Podcast.
If your episodes show and you can play them, re-submit your Podcast.
-Fan