Shop Controller

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.Purchasing.Security;
using CompleteProject;

public class ShopController : MonoBehaviour {


    public Canvas shopCanvas;
    public GameObject iapPanel;
    public GameObject mainPanel;
    public GameObject ShopCanvas;
    public GameObject EndlessButton;


    #region On Awake Do The Following.
    void Awake()
    {
        ShopCanvas.SetActive(false);
        Debug.Log("Shop Canvas is HIdden");

        if (DataObject.instance == null)
        {
            DataObject.instance = new DataObject();
            DataObject.instance.Load();
            Debug.Log("Data File Loaded");
        }
        if (DataObject.instance.endlessUnlocked == false)
        {
            EndlessButton.SetActive(false);
            DataObject.instance.Save();
            Debug.Log("Endless Button Hidden on Start");
        }
        else if (DataObject.instance.endlessUnlocked == true)
        {
            EndlessButton.SetActive(true);
            DataObject.instance.Save();
            Debug.Log("Purchase Made, Button Not Hidden on Start");
        }
    }
    #endregion

    #region On Start Check This
    void Start()
    {

        if (DataObject.instance.endlessUnlocked == false)
        {
            EndlessButton.SetActive(false);
            DataObject.instance.Save();
            Debug.Log("Purchasers Set");
        }

        else if (DataObject.instance.endlessUnlocked == true)

        {
            EndlessButton.SetActive(true);
            DataObject.instance.Save();
            Debug.Log("Purchase Has Been Made");
        }
    }
    #endregion


    public void OpenShop()
	{
		shopCanvas.enabled = true;
        ShopCanvas.SetActive(true);
    }

	public void CloseShop()
	{
		shopCanvas.enabled = false;
        if (DataObject.instance.endlessUnlocked == false)
        {
            EndlessButton.SetActive(false);
            DataObject.instance.Save();
            Debug.Log("Endless Button Hidden on Start");
        }
        else if (DataObject.instance.endlessUnlocked == true)
        {
            EndlessButton.SetActive(true);
            DataObject.instance.Save();
            Debug.Log("Purchase Made, Button Not Hidden on Start");
        }
    }

	public void OpenIAP()
	{
		mainPanel.SetActive (false);
		iapPanel.SetActive (true);
	}

	public void CloseIAP()
	{
		mainPanel.SetActive (true);
		iapPanel.SetActive (false);
	}

}

OnGUI2D Script:

`using UnityEngine;
using System.Collections;
using UnityEngine.Advertisements;
using UnityEngine.Purchasing.Security;
using CompleteProject;
using UnityEngine.SceneManagement;

public class OnGUI2D : MonoBehaviour
{

public GameObject EndlessButton;

public void Standard() 
{
    SceneManager.LoadScene(2);
    if (DataObject.instance == null)
    {
        DataObject.instance.Save();
    }

}

public void Endless()
{
    SceneManager.LoadScene(3);
    if (DataObject.instance == null)
    {
        DataObject.instance.Load();
    }
    Debug.Log("Endless Mode Engaged");
}

public void QuitGame(string quitGame)
{
	Application.Quit();
    if (DataObject.instance.endlessUnlocked == false)
    {
        EndlessButton.SetActive(false);
        DataObject.instance.Save();
        Debug.Log("Saved As False");
    }

    else if (DataObject.instance.endlessUnlocked == true)

    {
        EndlessButton.SetActive(true);
        DataObject.instance.Save();
        Debug.Log("Saved As True");
    }

}

public void Credits(string credits)
{
    SceneManager.LoadScene(1);
    if (DataObject.instance.endlessUnlocked == true)
    {
        EndlessButton.SetActive(true);
        DataObject.instance.Save();
        Debug.Log("EndlessUnlocked");
        
    }
}

public void MainMenu(string mainMenu)
{
    SceneManager.LoadScene(0);
    if (DataObject.instance.endlessUnlocked == true)
    {
        EndlessButton.SetActive(true);
        DataObject.instance.Save();
        Debug.Log("EndlessUnlocked");
    }
}        

}`