BodyScan 2 quite... innacurate body readings?

I understand that I should be looking at the trend, but am I the only one that gets somewhat random readings?

Like.. today I got +0.3kg of muscle and -0.3kg of fat.

Yesterday, -0.9kg of muscle and +0.1kg of fat.

The day before, +0.3kg of muscle and, -0.1kg of fat.

Then, a few days prior to that I had +0.6kg of muscle, none of these numbers make sense, the fat percentage doesn't make sense either, according to the device I'm 10.8-10% body fat, which yeah, is not the case at all lol (should be higher, I'd to orbit at 15-18% at minimum)