Data not Saving in Android Using Unity Persistance Saving Training.

Hey guys! I am trying to save some data in my game, but it just isn't working. I want it to be stored in the device itself, and not on the sd-card. That is why I use the Internal Only selection, on the Player Settings.

Below is my script. I tried fixing it, looking everywhere, but got no answers. I did choose to use Binary Formatter instead of Player Prefs because I believe it is safer, and easier to use. Perhaps I shouldn't be using it at all... In the Editor everything works fine, and data is saved. The problem is building at Android. By the way, I didn't test yet on iOS, but wouldn't be surprised if it didn't work.

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 using System.Collections.Generic;
 using System;
 using System.Runtime.Serialization.Formatters.Binary;
 using System.IO;
 
 public class Datakeeper : MonoBehaviour {
     #region Define Stuff
     [Header("Variables")]
     public static int score;
     public static int highscore;
     public static int money;
     public static DateTime lastTime;
     public static Vector3 cameraPos;
     public static bool gotGift;
     public static bool gotEgg;
     public static bool watchedAd;
     public static bool destroyPlayerOnMenuScene;
 
     [Header("Player Manager")]
     public static Dictionary<string, bool> birdsKeeper;
     public GameObject[] birdList;
     public static string selectedBird;
     public static float PlayerSliderValue;
     public static Vector3 originalPlayerPos = new Vector3(-2, 0.5f, 5);
     public static Vector3 playerPos = new Vector3(-2, 0.5f, 5);
 
     [Header("Background Manager")]
     public static Dictionary<string, bool> bgKeeper;
     public GameObject[] bgList;
     public static string selectedBg;
     public static bool backgroundMoving = true;
     public static bool ResetBgPos = false;
 
 
     [Header("Save Config")]
     private string fileName = "/info.data";
 
     public enum Status { SELECTED, SUCCESS, FAILURE};
     #endregion
 
     #region Starting
     void Start()
     {
         Load();
         if (Application.platform == RuntimePlatform.IPhonePlayer)
         {
             Environment.SetEnvironmentVariable("MONO_REFLECTION_SERIALIZER", "yes");
         }
         DontDestroyOnLoad(gameObject);
         if(birdsKeeper == null)
         {
             InitializeBirdDictionary();
             lastTime = DateTime.UtcNow.AddDays(-2);
         }
 
         if(bgKeeper == null)
         {
             InitializeBgDictionary();
         }
     }
 
     void InitializeBirdDictionary()
     {
         birdsKeeper = new Dictionary<string, bool>();
         //Birds should be named: "bird 0", "bird 10", "bird 15", etc.
         //All birds prefabs should be found inside the birdList.
         for (int i = 0; i < birdList.Length; i++) //For each bird add a bird dictionary key named "bird " + "number" like "bird 1"
         {
             if(i == 0)//If it is the default bird make it true
             {
                 birdsKeeper.Add("bird " + i.ToString(), true);
             }
             else
             {
                 birdsKeeper.Add("bird " + i.ToString(), false);
             }
         }
         if (selectedBird == null || selectedBird == "")
         {
             selectedBird = "bird 0";
         }
     }
 
     void InitializeBgDictionary()
     {
         bgKeeper = new Dictionary<string, bool>();
         //bgs should be named: "bg 0", "bg 10", "bg 15", etc.
         //All bgs prefabs should be found inside the bgList.
         for (int i = 0; i < bgList.Length; i++) //For each bg add a bg dictionary key named "bg " + "number" like "bg 1"
         {
             if (i == 0)//If it is the default bg make it true
             {
                 bgKeeper.Add("bg " + i.ToString(), true);
                 if (selectedBg == null || selectedBg == "")
                 {
                     selectedBg = "bg 0";
                 }
             }
             else
             {
                 bgKeeper.Add("bg " + i.ToString(), false);
             }
         }
     }
     #endregion
     #region Load/Save
 
     void OnLevelWasLoaded()
     {
         Save();
     }
 
     void OnApplicationQuit()
     {
         Save();
     }
 
     void OnApplicationPause()
     {
         Save();
     }
 
     public void Save()
     {
         BinaryFormatter bf = new BinaryFormatter();
         FileStream file = File.Create(Application.persistentDataPath + fileName);
 
         Data data = new Data();
         //Variables
         data.highscore = highscore;
         data.money = money;
         data.lastTime = lastTime;
         //Player
         data.birdsKeeper = birdsKeeper;
         data.selectedBird = selectedBird;
         data.PlayerSliderValue = PlayerSliderValue;
         //Background
         data.bgKeeper = bgKeeper;
         data.selectedBg = selectedBg;
 
         bf.Serialize(file, data);
         file.Close();
     }
 
     public void Load()
     {
         if (File.Exists(Application.dataPath + fileName))
         {
             BinaryFormatter bf = new BinaryFormatter();
             FileStream file = File.Open(Application.persistentDataPath + fileName, FileMode.Open);
             Data data = (Data)bf.Deserialize(file);
             file.Close();
             //Variables
             highscore = data.highscore;
             money = data.money;
             lastTime = data.lastTime;
             //Player
             birdsKeeper = data.birdsKeeper;
             selectedBird = data.selectedBird;
             PlayerSliderValue = data.PlayerSliderValue;
             //Background
             bgKeeper = data.bgKeeper;
             selectedBg = data.selectedBg;
         }
         else
         {
             lastTime = DateTime.UtcNow;
         }
     }
 #endregion
 
 #region Invokable Voids
     public static void AddScore(int value)
     {
         score += value;
         if (score > highscore)
         {
             highscore = score;
         }
     }
 
     public static void AddMoney(int value)
     {
         money += value;
     }
 
     public void AddMoney_(int value)
     {
         money += value;
     }
 
     public static Status BuyBird(string birdName, int birdCost)
     {
         if (birdsKeeper[birdName])
         {
             selectedBird = birdName;
             return Status.SELECTED;
         }
         else
         {
             if (money >= birdCost)
             {
                 money -= birdCost;
                 birdsKeeper[birdName] = true;
                 selectedBird = birdName;
                 return Status.SUCCESS;
             }
             else
             {
                 return Status.FAILURE;
             }
         }
     }
 
     public static bool HasBird(string birdName)
     {
         if (birdsKeeper[birdName])
         {
             return true;
         }
         else
         {
             return false;
         }
     }
 
     public static Status BuyBg(string bgName, int bgCost)
     {
         if (birdsKeeper[bgName])
         {
             selectedBird = bgName;
             return Status.SUCCESS;
         }
         else
         {
             if (money >= bgCost)
             {
                 money -= bgCost;
                 bgKeeper[bgName] = true;
                 return Status.SUCCESS;
             }
             else
             {
                 return Status.FAILURE;
             }
         }
     }
 
     public static void StartBgMovement()
     {
         backgroundMoving = true;
         ResetBgPos = true;
     }
     public static void StopBgMovement()
     {
         backgroundMoving = false;
     }
 #endregion
 }
 
 [Serializable]
 public class Data
 {
     //Variables
     public int highscore;
     public int money;
     public DateTime lastTime;
 
     //Player Manager
     public Dictionary<string, bool> birdsKeeper;
     public string selectedBird;
     public float PlayerSliderValue;
 
     //Background Manager
     public Dictionary<string, bool> bgKeeper;
     public string selectedBg;
 }