Featured images not validating

Hi there,

First off, thank you so much for this amazing Plugin, I would pay for it in a heart beat if there was a premium version.

The context of this will contain some sensitive info, which I can’t add publicly. But in short, I am getting an ’embeds validation failed” error for displaying featured image in the RSS. If I untick the show featured images option in GN Publisher, it shows the first image in the body of the article.