I purchased it and did not received the email back with all my details to use the plugin.
I thought it must have been a technical problem so I emailed them without success. All my email come back to me because they email address is not real.
I texted them on Facebook and after days they texted me back pretending they were helping me. After a week or so I was still not able to use the service I had paid for.
I called them and they (David) invited me to contact them only by Facebook on which I had already left many messages.
Finally, since I was in the right to ask it, I asked them to be refunded. Well, from this point, they are completely disappeared.
From the reviews, I saw that I have not been the only one. So be careful because you can be the next one!