Problem connecting via bluetooth to DFRobot Romeo BLE board

/*
   -- New project --
   
   This source code of graphical user interface 
   has been generated automatically by RemoteXY editor.
   To compile this code using RemoteXY library 3.1.10 or later version 
   download by link http://remotexy.com/en/library/
   To connect using RemoteXY mobile app by link http://remotexy.com/en/download/                   
     - for ANDROID 4.13.1 or later version;
     - for iOS 1.10.1 or later version;
    
   This source code is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.    
*/

//////////////////////////////////////////////
//        RemoteXY include library          //
//////////////////////////////////////////////

// you can enable debug logging to Serial at 115200
//#define REMOTEXY__DEBUGLOG    

// RemoteXY select connection mode and include library 
#define REMOTEXY_MODE__HARDSERIAL

#include <RemoteXY.h>

// RemoteXY connection settings 
#define REMOTEXY_SERIAL Serial
#define REMOTEXY_SERIAL_SPEED 9600



// RemoteXY configurate  
#pragma pack(push, 1)
uint8_t RemoteXY_CONF[] =   // 36 bytes
  { 255,1,0,0,0,29,0,17,0,0,0,31,1,106,200,1,1,1,0,2,
  31,47,44,22,0,2,26,31,31,79,78,0,79,70,70,0 };
  
// this structure defines all the variables and events of your control interface 
struct {

    // input variables
  uint8_t switch_01; // =1 if switch ON and =0 if OFF

    // other variable
  uint8_t connect_flag;  // =1 if wire connected, else =0

} RemoteXY;
#pragma pack(pop)
 
/////////////////////////////////////////////
//           END RemoteXY include          //
/////////////////////////////////////////////

#define PIN_SWITCH_01 13


void setup() 
{
  RemoteXY_Init (); 
  
  pinMode (PIN_SWITCH_01, OUTPUT);
  
  // TODO you setup code
  
}

void loop() 
{ 
  RemoteXY_Handler ();
  
  digitalWrite(PIN_SWITCH_01, (RemoteXY.switch_01==0)?LOW:HIGH);
  
  // TODO you loop code
  // use the RemoteXY structure for data transfer
  // do not call delay(), use instead RemoteXY_delay() 


}

void setup() {
  Serial.begin(115200);  //initial the Serial
}

void loop() {
  if (Serial.available())  {
    Serial.write(Serial.read());//send what has been received
    Serial.println();   //print line feed character
  }
}

// PROGRAMA PARA USO CON ROBOT MINIQ ROMEO
#include <BlynkSimpleSerialBLE.h>

char auth[] = "<codigo autentificacion>";

int E1 = 5;     // Control Velocidad Motor 1
int E2 = 6;     // Control Velocidad Motor 2
int M1 = 4;     // Control Direccion Motor 1
int M2 = 7;     // Control Direccion Motor 2

int v = 100;
int vg = 50;

void setup() { 
  int i;
  for (i = 4; i <= 7; i++)
    pinMode(i, OUTPUT);  
  Serial.begin(115200);
  Blynk.begin(Serial, auth);
}

void loop() {
  Blynk.run();
}

// Utilizado desde blynk para recibir la velocidad desde un Slider
BLYNK_WRITE(V0) {
  v = param.asInt(); 
}

// Utilizado desde blynk para recibir posiciones desde un joystick
BLYNK_WRITE(V1) {
  int x = param[0].asInt();
  int y = param[1].asInt();

  if (x == 128 && y == 128)
    Detener();
    
  if (y > 148 && x > 108 && x < 148)
    Avanzar(v, v);
    
  else if (y < 108 && x > 108 && x < 148)
    Retroceder(v, v);

  if (x < 108 && y < 150)
    Izquierda(vg, vg);

  if (x > 148 && y < 150)
    Derecha(vg, vg);
}

// Utilizado desde blynk para recibir la velocidad de giro desde un Slider
BLYNK_WRITE(V2) {
  vg = param.asInt(); 
}

void Detener() {
  digitalWrite(E1, LOW);   
  digitalWrite(E2, LOW);      
}

void Avanzar(char a, char b) {
  analogWrite (E1, a);
  digitalWrite(M1, HIGH);    
  analogWrite (E2, b);    
  digitalWrite(M2, HIGH);
}

void Retroceder(char a, char b) {
  analogWrite (E1, a);
  digitalWrite(M1, LOW);   
  analogWrite (E2, b);    
  digitalWrite(M2, LOW);
}

void Izquierda(char a, char b) {
  analogWrite (E1, a);
  digitalWrite(M1, LOW);    
  analogWrite (E2, b);    
  digitalWrite(M2, HIGH);
}

void Derecha(char a,char b) {
  analogWrite (E1, a);
  digitalWrite(M1, HIGH);    
  analogWrite (E2, b);    
  digitalWrite(M2, LOW);
}