I have not been able to find where to report it to the plugins team. All I have been able to do so far is rate it a 1 star, and review it descriptively on the plugin's page.
I also subscribed to updates from the author's page, which brought the topic up again, as he is recruiting his friends (or possibly just creating new emails) to positively review the scam to boost ratings. I see thousands of downloads of this plugin.