ok I got it I just uninstalled everything and I installed another version and tried some random things and blablabla but finally it works! But anyway thanks a lot everyone
I think the problem is the anti piracy because when I check in the system options of my acekard I don't see the anti piracy option anywhere so I can't change it
ok thanks lol that was the problem my rom wasn't in a .nds format... but now I end up with another problem because when I start the game I end up with a blackscreen this blackscreen only appears with golden sun DD