Sonoff motion sensor not working

I purchased 2 sonoff SNZB-03 motion sensors from you about a year ago and they stopped working. We replaced the battery and they workimg for a couple of days then stop again. We have done a few times over the last year and no better. I have disabled amd reenabled the skill in alexa. Whst could be the issue please?

Hi there,

“stopped working” Do you mean the sensor can’t detect the movement? Could you please give us more details?