mystery error

[Shadyougemepergle]

i tried using the 3ds version to convert a hyrule warriors legends .sav file into a .bin file but it opened into a black screen with illegible writing and i tried pushing some buttons, when i pushed start the message turned clear and a second later it went back to my home, i also followed a link from a page that said there should be a .cia file but i only found .3dsx, https://gbatemp.net/threads/importing-gateway-saves-to-cia-games.425743/ is the page that said there should be a .cia file, also willing to let you try it but it won't let me share the file, now i've tried the one in the crash issue and i could use it, but when i made a save to see where to put the file, put it in, and tried restoring it, it didn't work. I also restored what i had and tried making a save with it and that test worked, then i tried following what the page said but the only way i can get it to be able to see files on the root of the sd card is file mode, but when i pushed select to enter, it said Adv. Mode in the top left of the top screen, then when i found out how to switch selection to the bottom screen and found the file, i found only x did anything and it doesn't give a restore option, i'm trying to restore the data to the game because i have a decade's worth of progress on it and the speedrunning leaderboard says 4 hours for any%