So i need help with the gyroscope in an fps controller

So i have been trying to get the gyroscope working with limiting the rotation of the camera, it worked fine but then the calibration stopped working. i am kinda a beginner and i am trying to get the to work so if anyone could help me i would be more than happy!

here's a copy of the code :

using UnityEngine; using System.Collections;

// Activate head tracking using the gyroscope public class gyroscope : MonoBehaviour { public GameObject player; // First Person Controller parent node public GameObject head; // First Person Controller camera

 // The initials orientation
 private float initialOrientationX;
 private float initialOrientationY;
 Quaternion origin = Quaternion.identity;
   

 public float xMinLimit = -360.0f;
 public float xMaxLimit = 360.0f;

 public float xSensitivity = 100.0f;
 public float ySensitivity = 100.0f;

 float yRot = 0.0f;
 float xRot = 0.0f;
 // Use this for initialization
 void Start()
 {
     // Activate the gyroscope
     Input.gyro.enabled = true;

     // Save the firsts values
     initialOrientationX = Input.gyro.rotationRateUnbiased.x;
     initialOrientationY = Input.gyro.rotationRateUnbiased.y;
    
     origin = Input.gyro.attitude;
 }

 // Update is called once per frame
 void Update()
 {
     rotateCamerax();
     rotateCameray();

     // Rotate the player and head using the gyroscope rotation rate
     player.transform.Rotate(0, initialOrientationY-Input.gyro.rotationRateUnbiased.y, 0);
     head.transform.Rotate(initialOrientationX-Input.gyro.rotationRateUnbiased.x, 0,0);
 }
 public void CalibrateYAngle()
 {

     player.transform.localRotation = Quaternion.Inverse(origin) * Input.gyro.attitude;
     head.transform.localRotation = Quaternion.Inverse(origin) * Input.gyro.attitude;
 }

 void rotateCamerax()
 {
     yRot += Input.gyro.rotationRateUnbiased.y * ySensitivity*Time.deltaTime;
     yRot = Mathf.Clamp(yRot, -90, 90);

     player.transform.localEulerAngles = new Vector3(0, -yRot, 0);

     
 }
 void rotateCameray()
 {
     xRot += Input.gyro.rotationRateUnbiased.x * xSensitivity * Time.deltaTime;
     xRot = Mathf.Clamp(xRot, -90, 90);

     head.transform.localEulerAngles = new Vector3(-xRot, 0, 0);


 }

}