The "Not enough money" issue means you're attempting to open a new trade without enough funds to cover the margin requirement, i.e. the free margin is less than the required margin for the new trade.
In your trading account, you can select your own leverage, and you'll need a certain amount of margin to cover your open positions.
For example, if you wish to trade $100,000 in trading volume and your leverage is set to 1:100, you will be required to have more than 1,000 dollars to open the position.