OnTriggerEnter2D just work once, and then stop working

I am working on a feature that works in this way, when the player presses a "x" key, a gameobject is enabled and this gameobject have a script that checks if something collided with him using the OnTriggerEnter2D method, and after 3 seconds the player script disables this gameobject.

Its a attack, but the problem is that, when this gameobject is enabled for the first time everything works fine, the OnTriggerEnter2D method gets called and works. But when the gameobject is enabled again, it doesn't work, unless i move the player from the place that the method was activated for the first time.

So, what i think its happening is that the OnTriggerEnter2D method is not being called again because the OnTriggerExit2D method was never called.

How can i reset the OnTriggerEnter2D method to work again everytime that i enable this gameobject? because i really don't have a clue

 

I found something similar that may help you know why this happens: https://forum.unity.com/threads/trigger-fires-for-inactive-disabled-collider.471785/

In your case, I think a flag in the OnTriggerStay2D instead of OnTriggerEnter2D will do.