Arduino mkr 1400 gsm

SI BLOCCA ARDUINO MKR 1400 GSM QUANDO IL PULSANTE VIENE PREMUTO
E NON MANDA LA NOTIFICA.

[code]
/*************************************************************
  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
    Blynk community:            http://community.blynk.cc
    Follow us:                  http://www.fb.com/blynkapp
                                http://twitter.com/blynk_app

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

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

  Simple push notification example

  App project setup:
    Push widget

  Connect a button to pin 2 and GND...
  Pressing this button will also push a message! ;)
 *************************************************************/

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

#include <SPI.h>
#include <MKRGSM.h>
#include <BlynkSimpleMKRGSM.h>

GSMClient client;
GPRS gprs;
GSM gsmAccess;

char auth[] = "kesJH";



char pin[]  = "";
char apn[]  = "internet.wind";
char user[] = "";
char pass[] = "";

void notifyOnButtonPress()
{
  // Invert state, since button is "Active LOW"
  int isButtonPressed = !digitalRead(7);
  if (isButtonPressed) {
    Serial.println("Button is pressed.");

    // Note:
    //   We allow 1 notification per 5 seconds for now.
    Blynk.notify("Yaaay... button is pressed!");

    // You can also use {DEVICE_NAME} placeholder for device name,
    // that will be replaced by your device name on the server side.
    //Blynk.notify("Yaaay... {DEVICE_NAME}  button is pressed!");
  }
}

void setup()
{
  // Debug console
  Serial.begin(9600);

   Blynk.begin(auth, gsmAccess, gprs, client, pin, apn, user, pass);

  // Setup notification button on pin 2
  pinMode(7, INPUT_PULLUP);
 
  // Attach pin 2 interrupt to our handler
  attachInterrupt(digitalPinToInterrupt(7), notifyOnButtonPress, CHANGE);
}

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

[/code]

Please see @PeteKnight post in

and example to fix ISR issues in

Read more about ISR in

and

https://www.arduino.cc/reference/en/language/variables/variable-scope--qualifiers/volatile/