Fruit ninja : Bomb works well but stroke still works only 50% on devices

Update: I found the fault of the bomb and fixed it. However, it appears that the stroke remains unsolved.

The script affecting this is the line script. Does anyone have any ideas how to fix this?

 using System.Collections;
 using UnityEngine;
 
 public class LineCreator : MonoBehaviour
 {
     int vertexCount = 0;
     bool mouseDown = false;
     LineRenderer line;
     public GameObject blast;
 
     void Awake()
     {
         line = GetComponent<LineRenderer>();
     }
 
     void Start()
     {
 
     }
 
     void Update()
     {
 
         if (Application.platform == RuntimePlatform.Android)
         {
 
             if (Input.touchCount > 0)
             {
 
                 if (Input.GetTouch(0).phase == TouchPhase.Moved)
                 {
                     line.SetVertexCount(vertexCount + 1);
                     Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
                     line.SetPosition(vertexCount, mousePos);
                     vertexCount++;
 
                     //BoxCollider2D box = gameObject.AddComponent<BoxCollider2D>();
                     //box.transform.position = line.transform.position;
                     //box.size = new Vector2(0.1f, 0.1f);
 
                     EdgeCollider2D eCol = gameObject.AddComponent<EdgeCollider2D>();
                     Vector3[] pos = new Vector3[line.positionCount];
                     line.GetPositions(pos);
                     Vector2[] pos2 = new Vector2[line.positionCount];
                     for (int i = 0; i < line.positionCount; i++)
                     {
                         pos2[i] = new Vector2(pos[i].x, pos[i].y);
 
                     }
                     eCol.points = pos2;
 
 
                 }
 
                 if (Input.GetTouch(0).phase == TouchPhase.Ended)
                 {
                     vertexCount = 0;
                     line.SetVertexCount(0);
 
                     BoxCollider2D[] collidors = GetComponents<BoxCollider2D>();
                     foreach (BoxCollider2D box in collidors)
                     {
 
                         Destroy(box);
 
                     }
 
                 }
 
             }
 
 
             if (Input.GetMouseButtonDown(0))
             {
                 mouseDown = true;
                 vertexCount = 0;
                 line.SetVertexCount(0);
 
             }
 
             EdgeCollider2D[] colliders = GetComponents<EdgeCollider2D>();
 
 
             //edge changed to box
             foreach (EdgeCollider2D box in colliders)
             {
                 Destroy(box);
 
             }
 
 
 
             if (mouseDown)
             {
                 line.SetVertexCount(vertexCount + 1);
                 Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
                 line.SetPosition(vertexCount, mousePos);
                 vertexCount++;
 
                 BoxCollider2D box = gameObject.AddComponent<BoxCollider2D>();
                 box.transform.position = line.transform.position;
                 box.size = new Vector2(0.1f, 0.1f);
 
             }
 
             if (Input.GetMouseButtonUp(0))
             {
                 mouseDown = false;
                 vertexCount = 0;
                 line.SetVertexCount(0);
 
 
                 //edge changed to box
                 BoxCollider2D[] collidors = GetComponents<BoxCollider2D>();
                 foreach (BoxCollider2D box in collidors)
                 {
 
                     Destroy(box);
 
                 }
             }
 
         }
 
         // else if (Application.platform == RuntimePlatform.WindowsPlayer)
         else
 
         {
 
             if (Input.GetMouseButtonDown(0))
             {
                 mouseDown = true;
 
             }
 
             if (mouseDown)
             {
                 line.positionCount = vertexCount + 1;
                 Vector3 mousePos = Camera.main.ScreenToWorldPoint(Input.mousePosition);
                 line.SetPosition(vertexCount, mousePos);
                 vertexCount++;
 
 
                 //BoxCollider2D box = gameObject.AddComponent<BoxCollider2D>();
                 //box.transform.position = line.transform.position;
                 //box.size = new Vector2(0.5f, 0.5f);
 
                 EdgeCollider2D edge = gameObject.AddComponent<EdgeCollider2D>();
                 Vector3[] pos = new Vector3[line.positionCount];
                 line.GetPositions(pos);
                 Vector2[] pos2 = new Vector2[line.positionCount];
                 for (int i = 0; i < line.positionCount; i++)
                 {
                     pos2[i] = new Vector2(pos[i].x, pos[i].y);
                 }
                 edge.points = pos2;
             }
 
             if (Input.GetMouseButtonUp(0))
             {
                 mouseDown = false;
                 vertexCount = 0;
                 line.positionCount = 0;
                 //BoxCollider2D[] colliders = GetComponents<BoxCollider2D>();
                 //foreach (BoxCollider2D box in colliders)
                 //{
                 // Destroy(box);
                 //}
 
                 //edge changed to box
                 EdgeCollider2D[] colliders = GetComponents<EdgeCollider2D>();
                 foreach (EdgeCollider2D box in colliders)
                 {
                     Destroy(box);
                 }
             }
         }
     }
 
 
     void OnCollisionEnter2D(Collision2D collision)
     {
 
         if (collision.gameObject.tag == "bomb")
         {
             GameObject b = Instantiate(blast, collision.transform.position, Quaternion.identity) as GameObject;
 
             Destroy(collision.gameObject);
             blast.SetActive(true);
 
         }
 
 
     }
 
 }