Check DoTrades for starters...
I cannot imagine
broker 
specific settings that could not allow for GT-Shadow to work. It's a bit different with scalper EAs (like FAPT) that are
spread 
dependent.
There is one more reason for GT-Shadow may not work. I guess that MIG is not a micro account, so the smallest trade size is probably 0.1, if your BalanceFactor is 2000, then you would need at least $20000 on your account to start trading...