Hey here is my problem :
Me, owning a 90 graveler, in front of kanto's elite 4
Wanting to exchange it to get golem
Finding someone, trading with him.
Gave me a 80 rattata
Went right into mail box, and now its locked, meaning i can't interact with it.
I see it's a johto's pokemon.
What can i do to give this pokemon back to it's owner, who actually still have my graveler ?
Thanks for your time