No feed items found.

Hello,
we just install your plugin and we followed the instructions. We got our feed but after we used the shortcode [wp-rss-aggregator] on our page, the feed did not show instead we get the message “No feed items found.” as we understand it the shortcode works but something else doesn’t. There are items but we can’t display them.

The page I need help with: [log in to see the link]