The Android subsystem within the BATM performs the QR code recognition.
Does your QR code have a proper border?
The Android system CANNOT "see" a QR code that is placed on a background without a differentiating color, i.e . the QR MUST HAVE A BORDER!
Examples:
Don't believe me? Try it with your smartphone.
Can you scan your ADMIN QR code?
First test to make sure that you can scan other QR codes by attempting a purchase using your BATM.
If it reads your wallet QR, then you have a problem with your ADMIN QR code.
I can't scan ANY QR code!
Unplug the camera USB connector from the motherboard:
Connect USB mouse to the same USB port as the camera. You should see a cursor on the screen and the mouse should work. If not, try another port.
Connect the camera to notebook/computer. Was the camera recognized as new hardware? Are you able to see camera video from the computer?
Reconnect when you have determined that the camera functions.
Check that the camera focus is properly set:
To manually focus your camera:
Enter the administration screen (if you still can):
Select "CAMERA FOCUS".
The default is 20. Adjust the focus (if needed) to get a crystal clear QR code visible in the scanner window.
If you have tried these steps and cannot resolve the problem, contact support.