Careful dude... 300 bucks... at 0.1 standard lot... You don't have enough to cover a drawdown with such a martingale ea such as pip brains... Hopefully you only set one currency pair and not as displayed by Pipbrain of 2 currency pair.
Since you are with FXOpen... I suggest you open a micro account with FXOpen and trade 0.1 micro lots. Even with a micro lot with 300 bucks... I do not think it is enough. Might I suggest 1k on a micro account or at least 500 bucks.