unable to change sim account in NinjaTrader 7

NinjaTrader 7 Licensing restrictions

• PLEASE NOTE: when changing the account in NinjaTrader 7 for use for trading
  • If you have the NinjaTrader free version license key entered under Help --> License Key, you can only trade in the sim101 account.
  • If you have a live license or evaluation license, go to File --> Uncheck Global Simulation mode.
  • For more details see this article Global Simulation mode
  • Please contact NinjaTrader support  for more details for chart trader and licensing at: www.ninjatrader.com