OnTrigger does not work for multi targets

Hello. I am new to Unity. I am using Easy Ar multi-target tracker, and OnTriggerEnter does not work for me. I considered checking IsTrigger and having a rigid body. It is surprising that for a simple object like cube the OntriggerEnter works but for my multi-target, the OnTriggerEnter never called.

here is link of my project:

Pls, help me.

p.s. There may be a problem with the targets object like their shader directory, but I am not sure. When I move the character toward targets by tag, it moves but OnTriggerEnter does not work.

More Descriptions are as follows:

This is one of my targets tracked by an imageTracker.

And this is my character. both have rigid body , collider, and checked isTrigger.

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class moveToTarget : MonoBehaviour
 {
     private float step;
     private GameObject[] tag1;
     private GameObject[] tag2;
     private bool hit1;
     private bool hit2;
 //    private bool hit3;
 
     // Start is called before the first frame update
     void Start()
     {
         hit1 = hit2 = false;
         step = 2f * Time.deltaTime;
         tag1 = GameObject.FindGameObjectsWithTag("tag1");
         tag2 = GameObject.FindGameObjectsWithTag("tag2");
 
     }
     private void OnTriggerStay(Collider other)
     {
         hit1 = true;
     }
     void OnCollisionEnter(Collision collision)
     {
         hit1 = true;
 
 
     }
         private void OnTriggerEnter(Collider other)
     {
         if (other.gameObject.tag == "tag1")
             hit1 = true;
         else if (other.gameObject.tag == "tag2")
             hit2 = true;
        // else if (other.gameObject.tag == "tag3")
          //   hit3 = true;
     }
 
     // Update is called once per frame
     void Update()
     {
          if (!hit2)
             transform.position = Vector3.MoveTowards(transform.position, tag2[0].transform.position, step);
 
          else if (!hit1)
          
            transform.position = Vector3.MoveTowards(transform.position, tag1[0].transform.position, step);
 
        
 
     }
 }

This is the script added to my character. The character movetoward target I mentioned, but the OnTriggerEnter never called.