Your data feed (CQR, Rithmic, etc.) is tied to your license. Even if you "crack" the interface, you cannot crack the external servers that provide the actual market data. The Hidden Dangers of Cracked Trading Software
Trading is a business. Using illegal software puts you on the wrong side of: ninjatrader lifetime license key crack patched
NinjaTrader often runs "Free Trading" promotions or discounts when you open a brokerage account directly through them. Final Word Your data feed (CQR, Rithmic, etc