Is it normal to use a personal account for deposits? And do withdrawals also require margin?

Mr. Reiji Ogino led me to this Fx exchange. I was told to increase my funds more and more, and as a result of increasing it, it seems that I made a lot of money in the exchange. But when I try to go back work, I demand a security deposit. Moreover, it freezes after August 15th. Is this possible? I want to know.