Just read up on marketplace rules. I now agree with them and would like to point one more thing out. The product we sell works fine with every type of proxy HQ or not. I told the OP that using HQ proxies will result in higher profit and a faster speed of the bot leading too a good return investment. There's literally nothing stopping him using free proxies apart from the fact he won't generate much profit at all since bad locations = low CPM. The word "scam" is very misguiding in this report.
Thanks for reviewing the case.
Also, Im going to warn you. If you remove his license key, and don't refund him, you will be banned.