I've just created a Rithmic demo account via https://www.rithmic.com/demo.html and can login to it without issue using Rithmic Trader Pro, Quantower and Jigsaw daytradr.
However, I cannot connect NinjaTrader to it using the "Rithmic for NinjaTrader Brokerage" connection. I have the "Rithmic Paper Trading (Chicago)" system selected but get the following error:
"The IB you are trying to connect to is not authorised to use NinjaTrader with Rithmic for NinjaTrader Brokerage (Logon failed)"
What am I missing to get this to work?
I'm using NinjaTrader 8.1.1.7 64-bit with a lifetime licence.

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