No featured image with autoblog

Hello! I really appreciate the autoblog plugin, as I'm using it for a few days now. I guess there is a way (with featured image addon) to add images as featured image in the post I import in my blog. I don't know how to make it work, I've tried the 3 provided ways to import images but it doesn't add the featured image in the post nor the featured image in media section.
I own the site of which I'm using rss, so I could change it if needed. The rss url is:
Could please help me to work things out? It could be the rss, maybe? I've given you access through wpmu dev dashboard support
Thank you very much!