Also, please actually take a NAND backup before playing around with this. I used the example Erista settings pinned on the Discord channel, thinking this should be fairly safe, and on rebooting got an error 2002-4373, which is NAND corruption...
Sorry for taking so long to respond. I was busy with university.
The gyro seems to work in the test app you send me.
If I move the 3DS up and down the green bar points in the opposite direction of the movement, moving the 3DS left causes the red...