When I charge my Nabi XD, its charging light turns red and green all the time, and after i charge it for two hours, it...

Make sure you are using a Nabi charging cable, then try a different outlet, or try using your USB and connecting it to a computer. If that does not work, it seems that your device might need a screen calibration. To do so, follow the next steps: Temporarily remove the rubber case. Hold the Volume+ Button and the Power Button at the same time to trigger a touch screen recalibration. If the screen is unlocked you will see a message. Follow instructions and please don't touch the screen until the calibration process is complete. If the screen still does not respond, try performing a soft reset. To perform a soft reset, follow the steps in here: https://www.nabitablet.com/support/artic...-do-i-perform-soft-reset-nabi