You have to win all of the other gyms then go right into it and the doors are open
to open the door of the 7th gym!
Open the door and challenge the gym leader.
Use HM cut on it.
You just have to go up to the door and have a Pokemon to use Cut on it. Simple. Hope that helps xx
You need to Get a mystery gift
You could find it in the dotted hole. Remember to bring a Pokemon that knows cut to open the door.
Use Cut.
there is no mysteri gift
To open the Elite Four, you have to get all the Gym badges.
This question is exactly how I thought, when I thought I had tried every trick in the book to get in. Until it dawned on me. You must use a pokemon that knows Cut, to "Cut" the door open. I felt incredibly stupid after seeing that the answer was so simple.
use hm Cut.
Go to the dotted hole in 6 island take a Pokemon which knows cut stand in front of the door go to Pokemon in menu,to the Pokemon with cut and use it (like how you use fly)It will open go in ENJOY!!!!!!!!!