CRSF RX not detected

Greetings.

I have a Crossfire diveristy RX connected to the RC IN channel of my Durandal FC.

RX is setup in 8 channel mode with PPM on channel 1.

When trying to calibrate the radio I get a message in QGC saying that the radio is not connected.

The radio can be detected and calibrated using Ardupilot

Just a guess: what’s your SYS_USE_IO param?