Operation failed. Unable to retrieve full-text content | CyberSEO Pro | CyberSEO support forum

Your settings are incorrect and should be fixed like this:

Container tag: div

Attributes (JSON format): {"class": "entry-content entry clearfix"}

or

Container tag: article

Attributes (JSON format): {"id": "the-post"}

or 

Container tag: article

Attributes (JSON format): {"class": "container-wrapper post-content tie-standard"}

or

Container tag: article

Attributes (JSON format): {"id": "the-post", "class": "container-wrapper post-content tie-standard"}

Please read this guide: https://www.cyberseo.net/blog/extracting-full-text-articles-using-container-tags/