Using HC-08 bluetooth module with arduino

Question

I have an arduino mega 2560 and a recently purchased HC-08 module and the connection is as the following:

Arduino | HC-08

VCC - VCC

GND - GND

14TX3 - TXD

15TX3 - RXD

When I power up the arduino it shows that flashing light and I am able to see it on my android phone but would only reject the connection every time I tried to pair. Also I am not able to send or receive any data from it at all, here is my code:

#include <SoftwareSerial.h>

SoftwareSerial hc08(15,14) // RX pin, TX pin;

void setup(){
  //Initialize Serial Monitor
  Serial.begin(9600);
  Serial.println("ENTER AT Commands:");
  //Initialize Bluetooth Serial Port
  hc08.begin(9600);
}

void loop(){
  //Write data from HC08 to Serial Monitor
  if (hc08.available()){
    Serial.println("Reading from bluetooth");
    Serial.write(hc08.read());
  }
  
  //Write from Serial Monitor to HC08
  if (Serial.available()){
    Serial.println("Writing to bluetooth");
    hc08.write(Serial.read());
  }  
}

I'd really appreciate help on how to get it working.

Answer 1

void setup(){
  //Initialize Serial Monitor
  Serial.begin(9600);
  Serial.println("ENTER AT Commands:");
  //Initialize Bluetooth Serial Port
  Serial3.begin(9600);
}

void loop(){
  //Write data from HC08 to Serial Monitor
  if (Serial3.available()){
    Serial.println("Reading from bluetooth");
    Serial.write(Serial3.read());
  }
  
  //Write from Serial Monitor to HC08
  if (Serial.available()){
    Serial.println("Writing to bluetooth");
    Serial3.write(Serial.read());
  }  
}

Answer 2

I think this is the problem on the hardware setting. It should be: Arduino | HC-08

VCC - VCC

GND - GND

14RX3 - TXD

15TX3 - RXD

Variable declare: SoftwareSerial hc08(14,15) // RX pin, TX pin;