RC not working QGC snapdragon flight

[shakeebbb]

Hi, Im using Spektrum DX8 RC. I followed all the instructions at https://github.com/ATLFlight/ATLFlightDocs/blob/master/PX4.md. I have my receiver connected to J15 of the snapdragon flight board(I tried J12 as well). The receiver is binded with the transmitter. My QGC doesnt show any response from RC (I tried many versions of QGC and mission planner as well to just see if it responds somewhere). It seems like the flight board doesnt recognize the RC. How can I solve it ? Is there any way to check whether it detects RC or not? Thanks

I did install snav to use snav_vehicles for sensor parameters. snav used to boot up automatically at startup causing the flight board to hang and shutdown itself after a while. I couldnt factory reset the board as well. I followed the guide and disabled autostart. I dont know if it has anything to do with RC parameters but I am just confused on whats the difference between calibrating using snav and qground control.