Hubtraffic API

The [] in the url is not good for WordPress, as wordpress things this is a shortcode.

try:
[jsoncontentimporter url=”https://it.pornhub.com/webmasters/search?id=44bc40f3bc04f65b7a35&search=hard&tags=Teen&thumbsize=medium” basenode=”videos” urlgettimeout=”30″]{title}[/jsoncontentimporter]

or
[jsoncontentimporter url=”https://it.pornhub.com/webmasters/search?id=44bc40f3bc04f65b7a35&search=hard&tags[]=Teen&thumbsize=medium” basenode=”videos” urlgettimeout=”30″]{title}[/jsoncontentimporter]

Now it importing part of the json data but didn’t display the video thumbs

you have to get familiar with the json-data, e.g. try https://jsonviewer.stack.hu/

and the plugin:
https://json-content-importer.com/support/faq/