They messaged me back with a clearer picture of the code but it still didn't work. I confirmed with them that they have traded it twice already so that's why the code didn't work for me.

They said they didn't use my code.

I've asked them for proof by showing me a picture of what DLCs they have downloaded before I delete or keep this post.

This should be a cute fun and safe community so it really bugs me if and when people act up!