You need to understand right away that bonuses are usually not real, but virtual money, which may be able to secure your capital. But this is not accurate. In addition, as far as I know, many brokers block the withdrawal with a bonus, because it needs to be processed and usually in a multiple amount. That is, you just can not manage your money and stop working with the broker, if you do not like it. So even if you decide to use the bonus, be sure to gather as much information as possible so that you do not find yourself in a hopeless or unpleasant situation.