The review team is assuming that a "QR code" needs to be scanned to place objects on AR(it is usual case of detecting planes by scanning a QR code). so just simply reply them that, "the app don't need any QR code. Just scan the Planes(Horizontal or Vertical) to display the model.
satyaharish
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you can use ARVideokit - https://github.com/AFathi/ARVideoKit. it is very simple to use for recording a video and saving.