Problem with my Gamepause Code

Hi, I tried to extend the Breakout Game and it worked pretty well so far. But now I'm working on a Pause Function and it causes me headaches. I finally got a solution working, but for some reason, this works only until you loose your first life.

 public void Setup ()
         {
             clonePaddle = Instantiate (paddle, transform.position, Quaternion.Euler(0f,-180f,0f)) as GameObject;
             Instantiate (bricksPrefab, transform.position, Quaternion.Euler(0f,-180f, 0f));
             GameObject ballObject = GameObject.Find ("Ball");
             ballScript = ballObject.GetComponent<Ball>();
             Cursor.visible = false;
             livesUI.SetActive (true);

So this function is called when the Player hits the Play button. It Instantiates the Paddle Prefab as a GameObject and I find a reference to it's child the Ball.

 public void Pause ()
     {
         paused = true;
         pMScript.PauseGame ();
         livesUI.SetActive (false);
         Cursor.visible = true;
         ballScript.Pause ();
     }
 
 
     public void Unpause ()
     {
         paused = false;
         livesUI.SetActive (true);
         ballScript.WakeUp ();
         Cursor.visible = false;
     }

With these functions and the reference I was able to call the two ballScript functions which are attached to a Script on the Ball prefab.

But when the Ball hits the ground the player loses a life, the paddle and his child gets destroyed and a after a short pause it gets instantiated

 public void LoseLife ()
     {
         lives--;
         livesText.text = "Lives: " + lives;
         Instantiate (deathParticles, clonePaddle.transform.position, Quaternion.identity);
         Destroy (clonePaddle);
         Invoke ("SetupPaddle", resetDelay);
         CheckGameOver ();
     }
 
     void SetupPaddle ()
     {
         clonePaddle = Instantiate (paddle, transform.position, Quaternion.Euler(0f,-180f,0f)) as GameObject;
   
         GameObject ballObject = GameObject.Find ("Ball");
         ballScript = ballObject.GetComponent<Ball>();
 

I thought it would also destroy the reference and so I made a new one. But when I hit pause after loosing a life, my paddle stands still and the ball is sill moving and I have no real clue why this is happening. But I guess it hase something to do with the reference to the Ball prefab. Here is the Ball Script, I hope you guys can help me out with this.

 public float ballInitialVelocity = 700f;
 
     public Rigidbody rb;
     private bool ballInPlay;
     private Vector3 savedVelocity;
     private Vector3 savedAngularVelocity;
 
 
     // Use this for initialization
     void Awake ()
     {
         rb = GetComponent<Rigidbody> ();
 
     }
   
     // Update is called once per frame
     void Update ()
     {
              if (Input.GetButtonDown ("Fire1") && ballInPlay == false && GameManager.instance.paused == false)
                 {
                 transform.parent = null;
                 ballInPlay = true;
                 rb.isKinematic = false;
                 rb.AddForce (new Vector3 (ballInitialVelocity, ballInitialVelocity, 0));
 
                 }
     }
 
 
     public void Pause ()
     {
         savedVelocity = rb.velocity;
         savedAngularVelocity = rb.angularVelocity;
         rb.isKinematic = true;
     }
     public void WakeUp ()
     {
         rb.isKinematic = false;
         rb.AddForce (savedVelocity, ForceMode.VelocityChange);
         rb.AddTorque (savedAngularVelocity, ForceMode.VelocityChange);
 
     }