Hi,
Check that both the ink cartridges are not ''low''. The printer will not copy if the cartridges are low.
If they are alright try a'' semi-full reset ''and see if it resolves your problem.
Touch the upper left corner of the touch pad once, then the upper right corner, then the upper left again two times. "Support Menu" comes on screen. Hit the right arrow to "Resets Menu", then the right arrow again to Semi-Full Reset".
Be patient it takes a little while.