Hello, I would like to know what version of adobe reader you are using in the video to extract the structure of the objects in the pdf (- YouTube).
The latest version of adobe reader does not work to extract elements from the pdf since it takes all the pdf as a single object. As you can see in the following image:
Here is a link to the DC18 versions of Adobe Reader that I downloaded and installed after uninstalling the most current version I had. Also recommended to follow tutorial instructions to stop auto-update from Adobe.