Sorry for the inconvenience.
Could you please discharge it until the SOC 0%? And then please recharge it and see what happen.
Also, is it normal when you recharge it with other ways. Please try to recharge it with other ways.
The unit always needs a good calibration
Please drain it to 0, then recharge completely.
And there is a trickle charging after the SOC is 90%, so it usually charges slowly.