Problem mit reboot (wdt reset)

#include "Arduino.h"
#include <EMailSender.h>
#include <ESP8266WiFi.h>

const char* ssid = "*************";
const char* password = "*************";

uint8_t connection_state = 0;
uint16_t reconnect_interval = 5000;

#define BUTTON_ALARM 9
#define BUTTON_FENCE 9

EMailSender emailSend("xy@gmail.com", "password");

uint8_t WiFiConnect(const char* nSSID = nullptr, const char* nPassword = nullptr)
{
    static uint16_t attempt = 0;
    Serial.print("Connecting to ");
    if(nSSID) {
        WiFi.begin(nSSID, nPassword);
        Serial.println(nSSID);
    }

    uint8_t i = 0;
    while(WiFi.status()!= WL_CONNECTED && i++ < 50)
    {
        delay(200);
        Serial.print(".");
    }
    ++attempt;
    Serial.println("");
    if(i == 51) {
        Serial.print("Connection: TIMEOUT on attempt: ");
        Serial.println(attempt);
        if(attempt % 2 == 0)
            Serial.println("Check if access point available or SSID and Password\r\n");
        return false;
    }
    Serial.println("Connection: ESTABLISHED");
    Serial.print("Got IP address: ");
    Serial.println(WiFi.localIP());
    return true;
}

void Awaits()
{
    uint32_t ts = millis();
    while(!connection_state)
    {
        delay(50);
        if(millis() > (ts + reconnect_interval) && !connection_state){
            connection_state = WiFiConnect();
            ts = millis();
        }
    }
}

void setup()
{
    Serial.begin(115200);
    delay(100);
    Serial.println("************************************");
    Serial.println("EMailSenderEsp8266GMailTest");
    Serial.println("***************************"**********);

    pinMode(BUTTON_ALARM,INPUT);
    pinMode(BUTTON_FENCE,INPUT);
 
    
    connection_state = WiFiConnect(ssid, password);
    if(!connection_state)  // if not connected to WIFI
        Awaits();          // constantly trying to connect

    /*
    EMailSender::EMailMessage message;
    message.subject = "Alert: Renosterkop R13a";
    message.message = "Help, we are attacked";

    EMailSender::Response resp = emailSend.send("xy@gmx.de", message);

    Serial.println("Sending status: ");

    Serial.println(resp.status);
    Serial.println(resp.code);
    Serial.println(resp.desc); 
    */
}

void loop()
{
    if (digitalRead(BUTTON_ALARM) == 0) {
    EMailSender::EMailMessage message;
    message.subject = "Alert: Renosterkop R13a";
    message.message = "Help, we are attacked";

    EMailSender::Response resp = emailSend.send("xy@gmx.de", message);

    Serial.println("Sending status: ");

    Serial.println(resp.status);
    Serial.println(resp.code);
    Serial.println(resp.desc);
    }
}

#include <WiFi.h>
#include "ESP32_MailClient.h"

// REPLACE WITH YOUR NETWORK CREDENTIALS
const char* ssid = "ssid";
const char* password = "password";

// To send Email using Gmail use port 465 (SSL) and SMTP Server smtp.gmail.com
// YOU MUST ENABLE less secure app option https://myaccount.google.com/lesssecureapps?pli=1
#define emailSenderAccount    "xy@gmail.com"
#define emailSenderPassword   "password"
#define smtpServer            "smtp.gmail.com"
#define smtpServerPort        465
#define emailSubject          "[ALERT] Renosterkop R13a"

#define BUTTON_ALARM 18
#define BUTTON_FENCE 18

// Default Recipient Email Address
String inputMessage = "xy@gmx.de";
String enableEmailChecked = "checked";
String inputMessage2 = "true";

// Flag variable to keep track if email notification was sent or not
bool emailSent = false;

// The Email Sending data object contains config and data to send
SMTPData smtpData;

void setup() {
  Serial.begin(115200);
  delay(100);
  Serial.println("***************************");
  Serial.println("ESP32_Email_Alert_01");
  Serial.println("***************************");

  pinMode(BUTTON_ALARM,INPUT);
  pinMode(BUTTON_FENCE,INPUT);
  
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid, password);
  if (WiFi.waitForConnectResult() != WL_CONNECTED) {
    Serial.println("WiFi Failed!");
    return;
  }
  Serial.println();
  Serial.print("ESP32 IP Address: http://");
  Serial.println(WiFi.localIP());
  
 }

void loop() {
      
    // Check if temperature is above threshold and if it needs to send the Email alert
    if(digitalRead(BUTTON_ALARM) == 0 && !emailSent){
      String emailMessage = String("Help, we are attacked, Please send Help"); 
      
      if(sendEmailNotification(emailMessage)) {
        Serial.println(emailMessage);
        emailSent = true;
      }
      else {
        Serial.println("Email failed to send");
      }    
    }
     
}

bool sendEmailNotification(String emailMessage){
  // Set the SMTP Server Email host, port, account and password
  smtpData.setLogin(smtpServer, smtpServerPort, emailSenderAccount, emailSenderPassword);

  // For library version 1.2.0 and later which STARTTLS protocol was supported,the STARTTLS will be 
  // enabled automatically when port 587 was used, or enable it manually using setSTARTTLS function.
  //smtpData.setSTARTTLS(true);

  // Set the sender name and Email
  smtpData.setSender("ESP32", emailSenderAccount);

  // Set Email priority or importance High, Normal, Low or 1 to 5 (1 is highest)
  smtpData.setPriority("High");

  // Set the subject
  smtpData.setSubject(emailSubject);

  // Set the message with HTML format
  smtpData.setMessage(emailMessage, true);

  // Add recipients
  smtpData.addRecipient(inputMessage);

  smtpData.setSendCallback(sendCallback);

  // Start sending Email, can be set callback function to track the status
  if (!MailClient.sendMail(smtpData)) {
    Serial.println("Error sending Email, " + MailClient.smtpErrorReason());
    return false;
  }
  // Clear all data from Email object to free memory
  smtpData.empty();
  return true;
}

// Callback function to get the Email sending status
void sendCallback(SendStatus msg) {
  // Print the current status
  Serial.println(msg.info());

  // Do something when complete
  if (msg.success()) {
    Serial.println("----------------");
  }
}