SmartAudio and Cube Orange+ configuration

Hello,
I’m trying to connect my VTX (RushFPV MaxSolo 2.5W) via SmartAudio to Orange Cube+ according to the instructions. Unfortunately, I haven’t managed to establish a connection yet so that I could control the VTX parameters from the Mission Planner position. Do you have any ideas what might be wrong?

My settings look like this:
obraz


You need to connect to a serial port and set up the serial port protocol

I was able to connect to the VTX via Serial4 (GPS2), for some unknown reason I was unable to connect via Serial5 (CONS), and I have the ADS-B receiver disabled.

Does this mean that Serial5 can only be used for the ADS-B receiver?