Simple Coroutine doesn't finish

Hey! I am trying to create a mana-pickup item. Which will dissapear if a player touches it and then appear and the same place 2 seconds later.

When I run the code, everything seems to work, except it doesn't finish it: the component gets diabled and disappears, but doesn't appear back in 2 seconds, NOR does it print anything. Could you please help? Thank you very much!

Here's the code: using UnityEngine; using System.Collections;

 public class manaboxscript : MonoBehaviour {
 
     public GameObject enteredgameobject;
     public imagescript linkvariable;
 
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
 
     }
 
     void OnTriggerEnter(Collider other)
     {
         enteredgameobject = other.gameObject;
         linkvariable = enteredgameobject.GetComponent<imagescript> ();
         StartCoroutine(WaitAndPrint(2.0F));
     }
 
     IEnumerator WaitAndPrint(float waitTime) {
         gameObject.SetActive (false);
         yield return new WaitForSeconds(waitTime);
         print(waitTime);
         print("WaitAndPrint " + Time.time);
         gameObject.SetActive (true);
     }
 }