Authentication to the RSS Feed

Hi,

i want connect to a rss feed, which is secured with a basic authentication. This is the url of the feed. https://www.gamespodcast.de/feed/premium5/

I don't get a authentication window, if i added it without login informations. When i added the link with https://:@www.gamespodcast.de/feed/premium5/, the software maked a refresh, but didn't show the new show.

Thank you very much.