I think before people test the script, @OP should try by himself, so he can know which part from that script that does not work.
He will know if the script needs modified more to find the right code.
It is like people test the script, but they don't know if the script can work for them or not.
But yes, as the other members said, we need to be careful to use the script because if we don't know about the code, we can make a mistake to us.
This does not seems to me any legitimate source because if somebody wanted to test it would lend themself the coin even if does not own it and if was confident enough will test themself and if it works will keep and sell later than giving out and asking other to test it. Be cautious and check on your own risk.
If he wants to test before other people, he will use his own money, and not from lending from someone because that can make him in trouble.
That will good for people to know what is the result, so they can also try and test the script as him.