I have this problem too, to charge it use a power bank, preferably a one with both a “tablet” and “phone” output. When you plug it in the phone output, the orange light will blink three times but won’t charge (the same thing that happens when you plug it into your pc). You’ll have to use the tablet output to charge the device. Try any power bank you have. Even if it has only one port, chances are it’s a tablet port. I still haven’t figured out how to get it working through wall outlet though (I’ve tried multiple adapters, none of them worked)