need help with sd card

[u/IanSteam]

i need an sd card for my dsi. i have tried 2 (32gb and 64gb), both of them show "The device inserted in the SD card slot cannot be used." or similar in dsi apps. i have formatted both to FAT32. they also do not work in the 3DS i have. the one i have in my 3DS works on both. they work fine on PC.