NDS Files not(?) appearing in TWiLight Menu

[filex]

I'm having an issue with TWiLight, basically, I download a .nds file, put it in root>roms>nds but when I open TWiLight Menu it's blank? It' not empty, it sort-of appears, but it's a white bubble. As you can see ACWW was fine which I downloaded almost as soon as I got this 3DS, but anything new doesn't work. I don't think it's a space issue as when I check, my 64GB SD card says I have ~59GB left. I've tried placing things just in the roms folder which didn't work, I've deleted and redownloaded things which also didn't work. I also tried different games just to make sure it wasn't something with the file and it still won't work. I also tried a few other things, renaming the files, putting them in other folders, and I double triple checked that everything is in the right folder, root>roms>nds. If I press start on the blank slots it's just a white screen. Am I being dumb and screwing something up real bad or what? Any help is greatly appreciated!

 

[RocketRobz]

It sounds like the SD card you're using is bad. Please post a picture of the SD card you're using.

 

[SylverReZ]

SD card was likely corrupted. I suggest you reformat it using the guide here: https://3ds.hacks.guide/formatting-sd-(windows).html

 

[filex]

It sounds like the SD card you're using is bad. Please post a picture of the SD card you're using.

I actually got it to work by downloading it from another source, which is weird because the files in this pic are from Vimm's so I don't see why it'd be an issue. I don't have my 3DS on me but I can add a pic later if it'd still be useful. Thanks for the reply!