Body Battery below 5 for days, and stress always high

I've had an Instinct Solar for about 12 days, and am enjoying it. My questions/issue is with the Body Battery and Stress data. I've read that the stress is calculated from HRV, but as I can't see that data anywhere, I don't know why my stress is registered as so awful. Is it heart-rate related? Is it sunspots?

Since I've owned the Instinct, the stress number has never been below 25 and is frequently well over 50. This seems inaccurate. Is there anything I can do to calibrate this setting? Thanks.