If you can open a terminal window on the Raspberry pi and enter tail -f /var/log/syslog and then connect your camera you can see if it successfully connects to the RPI4. I have had issues with a USB3.0 hub not having enough power to run the camera. A warning will show up in the terminal window if that's the case.
I don't think the RPI4 ports are powerful enough to run the QHY coldmos cameras.
-Sonny
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