Problem using servo and H bridge together with widgets

Hello, I’m trying to make a RC car whose controller is a smartphone with blynk. I have a H bridge to control direction of the motor and speed and a servo motor for the steering mechanism. I’m using a hm-10 BLE module to connect to the smartphone. On the app I have a joystick (to select direction - forward, backwards - and to control the servo) and a slider to control the speed.
The problem is that the motor works either full speed or not at all. If I don’t include the servo library I’m able to smoothly variate the motor speed, while if I include the library it is either completely on or off.
This is my code, could you lend me a hand? Thank you very much for your time and patience.

#define BLYNK_PRINT Serial

#define TXD 11
#define RXD 10

#include <SoftwareSerial.h>

SoftwareSerial SwSerial(TXD, RXD); // TXD, RXD

#include <BlynkSimpleSerialBLE.h>
#include <SoftwareSerial.h>
#include <Servo.h>

Servo myServo;

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "asdasdasd";

SoftwareSerial SerialBLE(TXD, RXD); // TXD, RXD

const int activationPin = 9; //turn motor on off -> H bridge
const int controlPin1 = 3; //set direction -> H bridge
const int controlPin2 = 4; //set direction -> H bridge
const int servoPin = 6;

int speed = 0;

  speed = param.asInt();
  analogWrite(activationPin, speed);

  if (param[1].asInt() >= 0)
    digitalWrite(controlPin1, HIGH);
    digitalWrite(controlPin2, LOW);


    digitalWrite(controlPin2, HIGH);
    digitalWrite(controlPin1, LOW);

  int angle = param[0].asInt();
  if (angle >= 168)
    angle = 168;
  else if (angle <= 16)
    angle = 16;


  //Blynk.virtualWrite(V2, angle);

void setup()
  //pin mode
  pinMode(controlPin1, OUTPUT);
  pinMode(controlPin2, OUTPUT);
  pinMode(activationPin, OUTPUT);

  // Debug console

  Blynk.begin(SerialBLE, auth);

  Serial.println("Waiting for connections...");



void loop()

Your issue is not Blynk related… study up on the servo library and how using it effects PWM on certain Arduino pins.