Sign up for an account with NT: https://ninjatrader.com/
It's very quick, and you don't have to fund it to go live. You can get a plan for demo sim trading on the NT Web and NT Desktop. The demo account you get is linked, so you have web and desktop in parallel to see orders and positions!
NT Sim Account - Data Feed Plan
Get an NT Account and demo feed for $12 per month
https://account.ninjatrader.com/settings/subscriptions
Market Data
Globex Non-Pro Level I
Market data subscriptions are valid for the current month and will auto-renew unless canceled. If you cancel, the subscription won’t continue in the next month.
N.B: This is the best choice as you can use NT Web, Mobile, and Desktop and view the same orders/positions in your account.
NinjaTrader Continuum (If available)
For some historical accounts, this may be available
https://account.ninjatrader.com/settings/profile
Platform NinjaTrader Continuum Password Reset
You will receive an email sent from do-not-reply-gw@cqg.com containing a link to reset your platform login password. Each active user will receive an email.
NOTE: CQG demo passwords are sent to your email from CQG!
Unable to open an account?
Try GFF or open a prop firm account or use Kinetick
NinjaTrader Support
For NinjaTrader support with the platform, connections, or brokerage account, contact NinjaTrader directly https://ninjatrader.com/