Try to format the Micro SD card you're using? Idk if it would work with wood (cause i myself use moonshell with a R4I 3DS card) But almost all problems i have with my card can be fixed by formatting. If you are worried about losing all the roms downloaded etc. just cut all the files into a new...
I took a look at the rail and noticed that the two last pins were soldered for some reason, luckly I still had the rail of my broken joycon so after I swapped them I was able to use it attached to the console