Question about NOT_FOUND (keyPath articleId)

Hello. The article is in my dashboard and I removed it from Apple News because the formatting wasn’t correct so now it appears as NOT_FOUND (keyPath articleId) in the list of articles on the plugin settings. How do I remove the article to republish to Apple News? Going further than that, how would I remove en mass all the articles to start fresh? Because when I hit delete the article still appears.

Thank you in advance