Why does the “HDMI IN” field of OSD show “Please scan QR” after connecting HDMI cable with ClonerAlliance UHD Pro?

Please confirm that all cables and devices are connected properly.

If this problem keeps showing up, you may be using an unsupported video source content. Please change the video source and try again.

For detail, please see https://www.cloner-alliance.com/unsupported-content.