Using featured image isn't working and there's no errors or alternative ways to deal with

So I installed the plugin and set it up. Ticked the add-on "use featured image". It adds the post (also not sure about author, doesn't end up as a meta) correctly except the image.
This is taken from the feed:

<item>
<title>Test</title>
<link>http://www.facebook.com/100000675711206</link>
<author>Martina Shabonet</author>
<description>#Uppdrag1 #thisisorebro</description>
<pubDate>Thu, 10 Jan 2013 13:02:22 GMT</pubDate>
<image>
<link>http://www.facebook.com/100000675711206</link>
<title>Test</title>
<url>
http://files.parse.com/36373327-f48b-4c5a-8b69-7ac721400a72/664861fe-64b5-4444-9b65-536614f9c59f-Image.jpg
</url>
</image>
</item>

Here are the settings:
http://npp-dev.se/screenshot.png

What do I need to do to make it work? Also I'd like some input on the <author> tag, as is it's a name and it doesn't show in a custom field either.

Best regards,
Daniel