Please edit your post, select all code and click the </> button to apply so-called code tags and next save your post. It makes it easier to read, easier to copy and prevents the forum software from incorrect interpretation of the code.
Can you communicate using some examples that come with the library that you use to verify that you do not have other problems (e.g. bad connections, bad reception). I know that I had endless problems due to interference.
How are you powering the nRFs?
Your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project 
See About the Installation & Troubleshooting category.