just because there is no explanation doesn't mean you should freely throw money at it. doing your own research would've helped a lot in this case. take it as a lessons learned
they were only $ 40, moreover they are not lost, according to them they are used to pay the fees when I trade on bts .. I will try if it works .. I am only sorry that the day after BTS rose almost 30%, so I lost a little 'more. It is not so easy to understand 100% the English written on the sites.