I'll start by saying that I transferred a few hundred euros because I noticed an arbitrage opportunity. however, as soon as I tried to withdraw a sum of 300 euros the problems started. they asked me to validate the account by paying a sum of $188....which I did without calculating the deposit commissions, therefore the final sum was 186.12 and they did not accept it as confirmation. managed to make a deposit of precisely $188 with quite a few calculations, the account had therefore exceeded $700 in value and therefore I had to become a Premium user to be able to withdraw. to become premium you must deposit the exact sum of 0.11 ETH. well done, they told me that my account was at risk given the strange movements there were (practically all the deposits they asked for), so I have to leave a minimum of $1500 in the account, and then I will be able to withdraw. I have no words to describe this service. I practically have $1500 hostage that I will never be able to withdraw.