When I got on the scales this morning my weight was 69 kg instead of around 75. I'm pretty sure I didn't lose 6 kg during the day :) Also, it can't detect HR but that might cause it can't identify any person around that new weight.
I tried recharging the battery (was at 76%, is now at 100%) but with no change. One of my kids, normally around 25 kg, is now at 21.4 so it seems to be happening all over.
What do I do to fix it?