DSTT compatablity on N3DS [N00b]

I purchased a DSTT on nds-card.com and used DSTT V1.18 official kernel.

N3DS is using luma3ds, but the card that pops up in the loader is a blank ds cartridge icon. When I boot it, it give me a message saying that the device has an error and needs to power off.

What am I doing incorrectly?

Thanks in advance!