There could be an issue with the module itself.
I can recommend doing a SMMI test and checking if the module is working as intended, for this you can open the calculator app and type ".12345+=" and choose Single test and then select the camera tests.
Please make sure to scan the QR Code down below to test the camera.
If this does not work then please reach out to your closest ASUS Service Center.
https://www.asus.com/support/service-center-location/
