Hardware Can't add stuff with MicroSD card management

[AxlSt00pid]

I have a New 3DS XL with a 32 GB Micro SD card, everything was working fine but today I can't add anything from my PC (Windows 10) to my N3DS XL with Micro SD Card management.

I have written the correct user and password, I can view the contents of my Micro SD Card and I can even delete stuff in it or transfer things to my PC, but I can't put stuff from my PC to my Micro SD Card, it says that I need privileges to do it (Even though I'm the only usr on my PC and I'm the admin).

What can I do to solve this?
EDIT: Restarting both the N3DS XL and my PC did nothing

 

[AxlSt00pid]

Ok, I can transfer stuff, but I can't transfer the new version of the animal crossing new leaf cheat NTR plugin

 

[Xenocaulibur]

Try using a FTP server to move your files.

 

[AxlSt00pid]

Try using a FTP server to move your files.

Yeah, I already did that to transfer the plugin