Won't Turn On

@BLUETTI_CARE
Our EB3A #EB3A2338005816042 off turns often at 49% or 75% charge. It won’t turn back on until the unit’s AC charging cord is plugged into the wall outlet. We have previously updated the firmware for other problems. Hopefully you can help us.
Thanks, John

The Firmware is as follows
ARM - v2057.12
DSP - V2056.15