I tryed to setup, but failed for some reason.
That must be the catch from their side. So, that script is not for literally free.
After visiting the link, I suspect this topic itself a plan to advertise some known crap business. Yes, I have seen hundreds of threads had opened here to sell some exchange scripts and lately I have seen some scam accusations too on a couple who are from the Indian city Madurai. (I maybe wrong but I am sure the site you have provided must be belonging to some scammers).
Do you accept any escrow? I would like to help you, but I want to be sure about funds.
That is right. No escrow-No business. And please share if you get any reply from OP as we like to know what is actually going on here.
Agree wirh you, anyway no answer from OP.