Failed to connect WiFi

I want to make a project with the ESP8266 and Arduino. Now i tried to get Connections with the Blynk app to the Module by using this 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
    Social networks:            http://www.fb.com/blynkapp
                                http://twitter.com/blynk_app

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

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

  This example shows how to use ESP8266 Shield (with AT commands)
  to connect your project to Blynk.

  WARNING!
    It's rather tricky to get it working, please read this article:
    https://github.com/blynkkk/blynk-library/wiki/ESP8266-with-AT-firmware

  Change WiFi ssid, pass, and Blynk auth token to run :)
  Feel free to apply it to any other example. It's simple!
 *************************************************************/

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


#include <ESP8266_Lib.h>
#include <BlynkSimpleShieldEsp8266.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "87edecee065d471681b528250161f607";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Wlan";
char pass[] = "12345678";

// Hardware Serial on Mega, Leonardo, Micro...
//#define EspSerial Serial1

// or Software Serial on Uno, Nano...
#include <SoftwareSerial.h>
SoftwareSerial EspSerial(10, 11); // RX, TX

// Your ESP8266 baud rate:
#define ESP8266_BAUD 9600

ESP8266 wifi(&EspSerial);

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

  delay(10);

  // Set ESP8266 baud rate
  EspSerial.begin(ESP8266_BAUD);
  delay(10);

  Blynk.begin(auth, wifi, ssid, pass);
}

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

I want to use an Andoid hotspot called “Wlan” to connect to the Server. But i always get this error in the Serial Monitor:

[19] 
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v0.4.8 on Arduino Uno

[603] Connecting to Wlan
[3816] AT version:0.40.0.0(Aug  8 2015 14:45:58)
SDK version:1.3.0
Ai-Thinker Technology Co.,Ltd.
Build:1.3.0.2 Sep 11 2015 11:48:04
OK
[14007] Failed to connect WiFi

Proper formatting is triple backticks fore and aft of code placement:

Blynk - FTFC

Have you tried searching this forum for your error msg?

https://community.blynk.cc/search?q=Failed%20to%20connect%20WiFi

Have you confirmed proper hookup and dedicated power for your ESP?

http://help.blynk.cc/how-to-connect-different-hardware-with-blynk/arduino/esp8266-with-at-firmware

Tanks for the answer.
Yes i was looking in the Forum there and didn’t find anything.
And i already tried some AT-commands using this code:

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11);  //RX,TX

//  Arduino pin 2 (RX) to ESP8266 TX
//  Arduino pin 3 to voltage divider then to ESP8266 RX
//  Connect GND from the Arduiono to GND on the ESP8266
//  Pull ESP8266 CH_PD HIGH

// When a command is entered in to the serial monitor on the computer 
// the Arduino will relay it to the ESP8266

 
int LEDPIN = 13;
 
void setup() 
{
    pinMode(LEDPIN, OUTPUT);
 
    Serial.begin(9600);     // communication with the host computer
    //while (!Serial)   { ; }
 
    // Start the software serial for communication with the ESP8266
    mySerial.begin(9600);  
 
    Serial.println("");
    Serial.println("Remember to to set Both NL & CR in the serial monitor.");
    Serial.println("Ready");
    Serial.println("");    
}
 
void loop() 
{
    // listen for communication from the ESP8266 and then write it to the serial monitor
    if ( mySerial.available() )   {  Serial.write( mySerial.read() );  }
 
    // listen for user input and send it to the ESP8266
    if ( Serial.available() )       {  mySerial.write( Serial.read() );  }
}

And it worked. With this Sketch above i also could connect to the hotspot.

I solved the Problem i tried using my personal mobile phone as a Hotspot, and it worked. i think the problem was that the internet connection from the phone i used before was somehow blocked, for devices like the Arduino, by the company i am working.