I have been working with 2 nrf since last month. It worked fine for a month and now it is not working.

I have tried to send a data to other while the other verify the received data and send a reply.
Here is my code for the transmitter.

#include <SPI.h>
#include <RF24.h>
#include <nRF24L01.h>
#include <string.h>
RF24 radio(9, 8);  // CE, CSN

const byte addresses[][6] = { "00001", "00002" };
bool sending;
void setup() {
  Serial.begin(9600);
  radio.begin();
  radio.openWritingPipe(addresses[0]);
  radio.openReadingPipe(1, addresses[1]);
  radio.setDataRate(RF24_250KBPS);
  radio.setChannel(50);

  radio.setPALevel(RF24_PA_MAX);
}

void loop() {

  // unsigned long start_time = millis();
  // while (!radio.available() && millis() - start_time < 200) {
  //   // Wait for a response for 200ms
  // }

  radio.startListening();
  if (radio.available()) {
    char textReceived[32] = { 0 };

    radio.read(&textReceived, sizeof(textReceived));
    Serial.println(textReceived);
    if (strncmp(textReceived, "B1", 2) == 0) {
      Serial.println("true");
      sending = true;
    } else {
      sending = false;
    }
  }
  // delay(1000);
  const char text[] = "Resb1";
  if (sending == true) {
    radio.stopListening();  // First, stop listening so we can talk.
    radio.write(&text, sizeof(text));
    Serial.println("reply sent");

    radio.startListening();  // Now, start listening for response
    sending = false;


    delay(1000);
  }
}

Here is my code to verify it and send reply.

#include <SPI.h>
#include <RF24.h>
#include <nRF24L01.h>
#include <string.h>
#include <SoftwareSerial.h>

RF24 radio(9, 8);  // CE, CSN
SoftwareSerial espSerial(6, 7);

const byte addresses[][6] = { "00001", "00002" };

void setup() {
  Serial.begin(115200);
  espSerial.begin(9600);

  radio.begin();
  radio.openWritingPipe(addresses[1]);
  radio.openReadingPipe(1, addresses[0]);
  radio.setChannel(50);
    radio.setDataRate(RF24_250KBPS);

  radio.setPALevel(RF24_PA_MAX);
}

void loop() {
  // radio.startListening();  // Start listening for messages
  const char response[] = "B1";
  Serial.println("inloop");

  radio.stopListening();  // First, stop listening so we can talk.
  radio.write(&response, sizeof(response));

  radio.startListening();
  if (radio.available()) {
    Serial.println("ravil");

    //   const char response[] = "B1";

    //   radio.stopListening();  // First, stop listening so we can talk.
    //   radio.write(&response, sizeof(response));


    char textReceived[32] = { 0 };
    radio.read(&textReceived, sizeof(textReceived));
    Serial.println(textReceived);
    if (strncmp(textReceived, "Resb1", 5) == 0) {
      Serial.println("inrange");
      espSerial.println("B1in");

    }else{
      espSerial.println("B1not");
    }
  } else {
    Serial.println("B1 not in range");
    espSerial.println("B1not");
  }

  delay(1000);
}

Wiring .

• Connect the NRF GND pin 1 to Arduino Uno GND pin
• Connect the NRF VCC pin 2 to Arduino Uno 3.3V pin
• Connect the NRF CE pin 3 to Arduino Uno digital pin 9
• Connect the NRF CSN pin 4 to Arduino Uno digital pin 8
• Connect the NRF SCK pin 5 to Arduino Uno digital pin 13
• Connect the NRF MOSI pin 6 to Arduino Uno digital pin 11
• Connect the NRF MISO pin 7 to Arduino Uno digital pin 12
• Connect the NRF IRQ pin 8 to Arduino Uno digital pin 10, we will not use.
  I also added a 100uf capacitor.

On my serial monitor i get sth like on the picture attached eventhouth the transmitter is on line.
I want to get sth like “B1” , “replysent” on transmitter and “Resb1″ ,”b1inrange” on receiver.
I use a clone and a original uno boards.
Any help should be appreciated.