Here is something I noticed this evening, when starting trading in a NEW account.
The commission estimated by MDP was wrong, and it was not the first time I noticed it (you see it displayed on the chart; check if it matches what you know about your broker). If the estimated value is too high, that can lead to MDP not placing trades at all (if the spread + estimated commission would be above 2.0 pips; in my case the estimated commission was 1.3 pips, leaving almost no room for spread).
The workaround is simple: place a trade for each of the pairs you want to trade with MDP; once you close the trades, MDP will adjust the commission to the value it finds in account's history. Note1: if your broker uses balance updates to post commissions, you'll probably get 0 for the detected commission; make sure you are ok with that (MDP will trade even when spreads are higher than intended). Note2: it looks like if you have an active order MDP will not use the one I just closed to compute the commission; only after closing the second order (on the same pair) the commission was properly calculated.
He who thinks he can, and he who thinks he cannot, are both right. ~ Henry Ford