Skipping posts from specific source “because it is already posted” but its not

Hello, the plug in is skipping the posts from a source and in the log says " Skipping post "Can Indexing Save Shipper-Carrier Relationships in a 6X Market?"", because it is already posted , but the post has never been posted on my web page, please help, thanks Source https://www.xeneta.com/blog/rss.xml