Garage door with status notification using Blynk.ino

/*************************************************************
  Download latest Blynk library here:
    https://github.com/blynkkk/blynk-library/releases/latest

  Blynk is a platform with iOS and Android apps to control
  Arduino, Raspberry Pi and the likes over the Internet.
  You can easily build graphic interfaces for all your
  projects by simply dragging and dropping widgets.

    Downloads, docs, tutorials: http://www.blynk.cc
    Sketch generator:           http://examples.blynk.cc
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                                http://twitter.com/blynk_app

  Blynk library is licensed under MIT license
  This example code is in public domain.

 *************************************************************

  Blynk using a LED widget on your phone!

  App project setup:
    LED widget on V1 & V2
 *************************************************************/

/* Comment this out to disable prints and save space */
#define BLYNK_PRINT Serial


#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>

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

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "";
char pass[] = "";

// Select your pin with contact
const int btnPin1 = D1;
const int btnPin2 = D2;

//Garage Door Open Timer setup
double openForTooLongInMins = 15;  //Change this timer to push notification.  Currently set at 15mins
int doorOpenedAtTimeInMills = 0;
int doorOpenDurationInSeconds = 0;
bool messageSentInThisOpening = false;
const int doorOpen = HIGH;
const int doorClosed = LOW;



WidgetLED led1(V1); //Match to the LED from the Blynk app
WidgetLED led2(V2);//Match to the LED from the Blynk app

BlynkTimer timer;



// V1 LED Widget represents the physical contact state
boolean btnState1 = false;
void buttonLedWidget1()
{
  // Read contact
  boolean isPressed = (digitalRead(btnPin1) == LOW);

  // If state has changed...
  if (isPressed != btnState1) {
    if (isPressed) {
      led1.on();
    } else {
      led1.off();
    }
    btnState1 = isPressed;
  }
}

// V2 LED Widget represents the physical contact state
boolean btnState2 = false;
void buttonLedWidget2()
{
  // Read contact2
  boolean isPressed = (digitalRead(btnPin2) == LOW);

  // If state has changed...
  if (isPressed != btnState2) {
    if (isPressed) {
      led2.on();
    } else {
      led2.off();
    }
    btnState2 = isPressed;
  }
}

void resetDoorOpenCounter() {
doorOpenDurationInSeconds = 0;
messageSentInThisOpening = false;
}
void checkOpen() {  //Push notification action door 1
if ( digitalRead(btnPin1) == HIGH ) {
doorOpenDurationInSeconds += 5;
}
if (digitalRead(btnPin1) == LOW) {
}

 
 int isButtonPressed = !digitalRead(btnPin1);
  if (isButtonPressed && doorOpenDurationInSeconds > openForTooLongInMins * 60 ) {
    Blynk.notify("Garage door open");


doorOpenDurationInSeconds =0;
// todo: this does not know if it sent successfully. needs work
messageSentInThisOpening = true;
}
}


void checkOpen2() {  //Push notification door 2
if ( digitalRead(btnPin2) == HIGH ) {
doorOpenDurationInSeconds += 5;
}
if (digitalRead(btnPin2) == LOW) {
}

 
 int isButtonPressed = !digitalRead(btnPin2);
  if (isButtonPressed && doorOpenDurationInSeconds > openForTooLongInMins * 60 ) {
    Blynk.notify("Garage door open");


doorOpenDurationInSeconds =0;
// todo: this does not know if it sent successfully. needs work
messageSentInThisOpening = true;
}
}


void setup()
{
  // Debug console
  Serial.begin(11500);

  Blynk.begin(auth, ssid, pass);
  // You can also specify server:
  //Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 80);
  //Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8080);

  // Setup physical button pin (active low)
  pinMode(btnPin1, INPUT);
  attachInterrupt(digitalPinToInterrupt(btnPin1), checkOpen, CHANGE);
  pinMode(btnPin2, INPUT);
  attachInterrupt(digitalPinToInterrupt(btnPin2), checkOpen2, CHANGE);
  timer.setInterval(500L, buttonLedWidget1);
  timer.setInterval(500L, buttonLedWidget2);
  timer.setInterval(1000000, checkOpen);  //Time will go up to 16mins because push notification was set at 15mins
  timer.setInterval(1000000, checkOpen2); //Time will go up to 16mins because push notification was set at 15mins
  
}

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

I edited the timers for push noticiations. I haven't tested it yet, but I am guess this is why my notification was not pushing because the timer was set too low.
timer.setInterval(1000000, checkOpen); //Time will go up to 16mins because push notification was set at 15mins
timer.setInterval(1000000, checkOpen2); //Time will go up to 16mins because push notification was set at 15mins

Something is going wrong with the timers. My Blynk app eventually goes offline.