Please make sure your API settings are correct: Invalid_Document

Hello,
Like others, the plug-in stopped working for me about 4 weeks ago. June 28th was the last time it published to my Apple news channel. I can publish from iCloud, but not from the CMS. Here is one of the articles that won’t publish because of the following error:

There has been an error with the API. Please make sure your API settings are correct and try again: Invalid_Document

I have tried reinstalling, changing the API key and secret after getting new ones from the publisher web app on iCloud, I’m not sure where to turn to next.

{"version":"1.1","identifier":"post-13052","language":"en","title":"iOS 10 beta 3 for developers rolls","documentStyle":{"backgroundColor":"#FAFAFA"},"layout":{"columns":9,"width":768,"margin":100,"gutter":20},"components":[{"role":"title","text":"iOS 10 beta 3 for developers rolls","textStyle":"default-title","layout":"title-layout"},{"role":"header","layout":"headerBelowTextPhotoLayout","components":[{"role":"photo","layout":"headerPhotoLayout","URL":"https:\/\/www.imthemobile.guru\/wp-content\/uploads\/2016\/07\/img_0695-1.png"}],"behavior":{"type":"parallax","factor":0.8}},{"role":"container","layout":{"columnStart":0,"columnSpan":7,"ignoreDocumentMargin":true},"style":{"backgroundColor":"#FAFAFA"},"components":[{"role":"byline","text":"by Jason Yeaman | Jul 18, 2016 | 11:44 AM","textStyle":"default-byline","layout":"byline-layout"},{"role":"photo","URL":"https:\/\/i0.wp.com\/www.imthemobile.guru\/wp-content\/uploads\/2016\/07\/img_0695.png?fit=7501334&ssl=1","layout":"anchor-layout-left","anchor":{"targetAnchorPosition":"center","rangeStart":0,"rangeLength":1,"targetComponentIdentifier":"component-5845b042b4a479d171f2bc48971f0738"}},{"role":"body","text":"iOS 10 beta 3, Dev","format":"markdown","textStyle":"dropcapBodyStyle","layout":"body-layout-last","identifier":"component-5845b042b4a479d171f2bc48971f0738"}]}],"componentTextStyles":{"dropcapBodyStyle":{"textAlignment":"left","fontName":"SanFranciscoDisplay-Regular","fontSize":18,"lineHeight":24,"textColor":"#000","linkStyle":{"textColor":"#428BCA"},"paragraphSpacingBefore":18,"paragraphSpacingAfter":18,"dropCapStyle":{"numberOfLines":4,"numberOfCharacters":1,"padding":5,"fontName":"Georgia-Bold","textColor":"#000"}},"default-title":{"fontName":"AvenirNext-Bold","fontSize":45,"lineHeight":52,"textColor":"#000","textAlignment":"center"},"default-byline":{"textAlignment":"center","fontName":"AvenirNext-Medium","fontSize":17,"textColor":"#53585F"}},"componentLayouts":{"anchored-image":{"margin":{"top":25,"bottom":25}},"body-layout":{"columnStart":1,"columnSpan":7,"margin":{"top":12,"bottom":12}},"body-layout-last":{"columnStart":1,"columnSpan":7,"margin":{"top":12,"bottom":30}},"anchor-layout-left":{"columnStart":0,"columnSpan":5},"title-layout":{"margin":{"top":30,"bottom":0}},"headerPhotoLayout":{"columnStart":0,"columnSpan":7,"ignoreDocumentMargin":true},"headerBelowTextPhotoLayout":{"columnStart":0,"columnSpan":7,"ignoreDocumentMargin":true,"margin":{"top":30,"bottom":0}},"byline-layout":{"columnStart":1,"columnSpan":7,"margin":{"top":10,"bottom":10}}},"metadata":{"excerpt":"When the release notes get posted on the dev portal, I'll address bug fixes. Currently, the update points to beta 2 notes.","thumbnailURL":"https:\/\/www.imthemobile.guru\/wp-content\/uploads\/2016\/07\/img_0695-1.png","dateCreated":"2016-07-18T17:44:13+00:00","dateModified":"2016-07-18T17:48:40+00:00","datePublished":"2016-07-18T17:44:13+00:00","canonicalURL":"https:\/\/www.imthemobile.guru\/ios-10-beta-3-for-developers-rolls\/","generatorIdentifier":"publish-to-apple-news","generatorName":"Publish to Apple News","generatorVersion":"1.1.5"}}

Any help would be appreciated.

https://www.ads-software.com/plugins/publish-to-apple-news/