If Citra still won't launch the game, your keys might be old. Re-dumping them from your 3DS with the latest scripts usually solves this. Alternative:
A: You need the Citra AES Key.txt Top file to decrypt and play 3DS games on Citra. Without it, you won't be able to play most 3DS games. citra aes keystxt top
: ~/.local/share/citra-emu/sysdata or ~/.var/app/org.citra_emu.citra/data/citra-emu/sysdata macOS : ~/Library/Application Support/Citra/sysdata If Citra still won't launch the game, your keys might be old
Open Citra and go to Emulation > Configure... . citra aes keystxt top