The website we were introduced to is Shinsegaex.

First, you need to create an account and start shopping. They provide you with stocks, and buyers will place orders. Once an order is placed, you are required to purchase from the supplier. After the order is completed, you are supposed to receive the funds. However, they start giving excuses like "under maintenance" or "clear pending orders." It snowballs from there, and eventually, all the money is gone, and I was banned from accessing the site.