FeedWordPress not pulling posts from a specific feed

I have a site where we are aggregating posts from a number of other blogs. Almost all of those feeds are working just fine.

I’ve recently added a new feed to our list. Initially, this user had some problems with the RSS feed as being an invalid feed so it was generating a server 500 error. We’ve corrected that and we’re no longer getting the error, but the feed is not importing. When I click the “update now” button, we get the message “100 posts were syndicated, 0 posts were updated” but nothing gets brought over.

Has anyone run into this problem?

Feed generating the problem: http://politicaljesus.com/feed/

Website experiencing the problem: http://mennonerds.com/

https://ww.wp.xz.cn/plugins/feedwordpress/