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EagleEye Trial Kit stops working during commissioning

My EagleEye Trial Kit stops working half way through the commissioning process in the tablet app. The MCU led is now blinking white and the app is not responding. 
I am using an iOS tablet with the latest PeopleCount app. Resetting the sensor or restarting the app does not work: the issue persists. 
What can I do to complete the sensor commissioning?