Some feeds grab only excerpts

The following page has only the excerpt of the content: http://rincon-music.com/2016/08/12/new-exclusive-research-reveals-uk-festival-market-driven-by-super-fans/

The feed this is taken from is available here:
http://feeds.feedburner.com/mi2nheadlines

There is also no featured image for this post. I’m having similar problems with all of my feeds so far. I can’t seem to get the featured images included, and much of the content doesn’t seem to appear in the posts either.

We currently use RSS Post Importer but we’ve had some trouble with them and want to find a solution for our 10+ sites. If we can work out the kinks together, we’d be interested in an 100 site license.

Some examples and their corresponding feeds:
Post: http://rincon-music.com/2016/08/12/six-of-princes-properties-to-be-sold-after-judge-approval/
Source: http://www.nme.com/news/prince/95639
Issue: no featured image, video content missing from bottom

post: http://rincon-music.com/2016/08/12/listen-as-at-the-drive-ins-omar-rodrguez-lpez-covers-ellie-goulding/
source: http://www.nme.com/rss/news
issue: missing featured image, video content, and audio content.

I understand some of these may not be able to be done with the plugin, but the better I can understand what can and can’t be done, the more likely I am to purchase your product. It looks great, and if I can get it to work properly I’d love to have it.

https://wordpress.org/plugins/wpematico/