Yes, once you’ve made a deposit, you can withdraw funds even if you didn’t trade.
However, if you decide to withdraw before your trading turnover (the sum of all trades) is double the amount you’ve deposited, there is a possibility of a 10% commission.
This commission is only charged in rare cases, and it is due to the company’s anti-fraud activities.
You can find full information about withdrawing before trading in paragraph 5.13 of the Client Agreement.