When I pause the game the clone does not stop

please I need help, I am beginner in coding. when I pause the game the clone still working so I don't know how to fix it.

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 using UnityEngine.SceneManagement;
 
 public class GameplayController : MonoBehaviour {
 
     public static GameplayController instance;
 
     [SerializeField]
     private Text gameoverScoreText;
 
     [SerializeField]
     private GameObject gameoverPanel;
 
     [SerializeField]
     private GameObject ready;
 
 
     public GameObject pausePanel;
 
 
 
     public void Awake () {
         MakeInstance ();
     }
 
     public void MakeInstance (){
         if (instance == null) {
             instance = this;
         }
     }
 
 
     // Use this for initialization
     void Start () {
         Time.timeScale = 0f;
 
     }
     
     // Update is called once per frame
     void Update () {
     
 
 
     }
 
     public void GameoverShowPanel (int finalScore) {
 
         gameoverPanel.SetActive (true);
         gameoverScoreText.text = finalScore.ToString ();
         StartCoroutine(RestartGame());
     }
 
     IEnumerator RestartGame() {
         yield return new WaitForSecondsRealtime (3f);
         SceneManager.LoadScene ("MainMenu");
     }
 
     public void StartTheGame (){
         Time.timeScale = 1f;
         ready.SetActive (false);
 
     }
 
     public void PauseTheGame () {
         Time.timeScale = 0f;
         pausePanel.SetActive (true);
     
 
     
     }
 
     public void ResumeTheGame (){
         Time.timeScale = 1f;
         pausePanel.SetActive (false);
     }
 
     public void BackToMainMenu () {
         Time.timeScale = 1f;
 
         SceneManager.LoadScene ("MainMenu");
     }
 }