First check if trading is allowed by going to Tools -> Options -> Experts tab -> Allow automated trading. Then make sure that the expert advisor button on the main toolbar is pressed. You should be able to see a smiley face in the top right-hand corner of your chart which shows that you have activated your EA correctly. If everything is all right, but the EA still does not trade, see your log files via the Experts tab in the Terminal window (you should be able to see what error occurs). You can also email us for further assistance at support@mtrading.com
