Problem Solved. for anyone in the future have similar case just perform factory configuration for VOXL Flight Deck by
"voxl-configure-vision-px4 -f" and then re-connect to QGC and you will see the miracle.
Best posts made by Vũ Văn Long
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RE: Help! lossing data from camera + IMU trackingposted in VOXL m500 Reference Drone