nRF24 and LCD ST7920

I’m having a issue when trying to combine my RF24 module with a LCD 128x64 graphical display.

Testing separately I’m able to communicate using the RF24 and I’m also able to draw new screens on the display but, when I combine both parts into one main code it seems that can’t operate together.
I’m able to draw to the LCD but the RF24 doesn’t seem able to send his message and receive a message either. I’m using this nRF24 library and the u8gb lib for the LCD.
I’m using a Arduino Mega.

Here’s my declaration
#include “U8glib.h”
U8GLIB_ST7920_128X64_1X u8g(6, 5, 4 ,7);
#include <nRF24L01.h>
#include <RF24.h>

RF24 radio(46,48);

nrf lib: https://github.com/nRF24/RF24
lcd lib: GitHub - olikraus/u8glib: Arduino Monochrom Graphics Library for LCDs and OLEDs

You need to post the two separate working programs and the combined program that is not working.

You also need to tell us in as much detail as possible what happens when you run the combined program.

I am familiar with the nRF24 but not with the LCD so please post a link to its datasheet.

Are you using the TMRh20 nRF24 library?

...R
Simple nRF24L01+ Tutorial