Connecting To Leeloo using R Trader Pro

[l2am]

Hello,
I'm using R Trader Pro Plugin-Mode successful with other software like Bookmap etc.
While evaluating MotiveWave I can connect to my Leeloo Rithmic account in direct mode successful.
Using R-Trader Pro Plugin Mode I get an error "Market Data Connection Not Available".

Is this a known issue or a configuration problem of my setup?

Thank you. Regards,
chris