Hi mimi,
You didn't mention what model Le Pan you have. I'm betting it is a Le Pan S. There is a definate charging issue with that model
1. You must use the supplied charger. A phone charger or usb port on a computer wont work.
2. If you were using the original charger I had the same problem. I switched to a Le Panll carger and it fired right up. So try a different 2 amp charger.
3. Make sure your cable is good.
4. Return it to Le Pan for warranty repair. They are aware of this problem