Hey! I got a new 3DS XL and tried to install Soundhax by using the standard guide. I retried the method there twice, and still get the "can't play" with the red circle banned symbol in the music app. I have made sure my extension names were on and my SD card looked just like the reference photos as well as the fact I made sure my otherapp and everything were the correct versions. I don't know why it isn't working. Please send help