NRF24L01 +pa +lna modules do not communicate
That sketch never worked for me also so try this:

Check whether your power supply can give a constant 3.3V and a minimum of 0.5A(500mA)?
Then try these connections:

Then try your code again.
If it fails to work try a simpler library like the NRFLite library and

I actually never got that library and that sketch to work, but when I kept everything the same and used the NRFLite library, everything worked!