I understand. You keep repeating yourself.
I just showed you what to do and how to do it. There’s nothing more for me to say:
Replace the WHITE BOX with the CAJA MESH (NOT THE BLUEPRINT), and replace the SPHERE with the COIN MESH (AGAIN, NOT THE BLUEPRINT).
As you learn more, you’ll understand why you had trouble with this. But again, there’s something wrong with your CAJA and MONEDA blueprints.