I have an account 50:1 in my account is $1000, made a trade for .20 cents and made $2 and closed it. I now have $1002 in my account. Then wanted to trade GBP/USD for .20 cents but got a message that i have insufficient margin to make the trade. Why couldnt i make the trade? I used the margin calculator and it said I needed like $25+ as margin. Im really confused. Please anyone, help me understand. Thank you