Permission denied when uploading file, but winscp works fine

[jack-liew]

Hi: I have a tp-link "wdr8660" router with a usb port, the router provides ftp service to access the usb hard disk. and ftp must be set to passive mode.

I can use winscp to add and delete files on ftp, but, it cannot be write to ftp server to use ftp-sync or other ftp plug of vscode, but only download files.

what should i do?

Thanks