Link 1 down while connecting Orange PI to Pixhawk - Companion

Hi everyone, I’m trying to connect my Orange PI 3 to Pixhawk with telemetry. I make the connection below: I also enable the uart from the config file according to user mauel of the Orange PI and my UART3 port is active: When I run “mavproxy.py” in the command line I’m getting the output below: Auto-detected serial ports are: /dev/ttyS0 /dev/ttyS1 /dev/ttyS2 /dev/ttyS3 /dev/ttyS4 /dev/ttyS5 Those ports are exist but only the ttyS0 and ttyS3 active. My connections are true, I even tried

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