Please provide the detailed information about the problem. Do you see any error message?
If not, I guess it is the very famous FTP problem - you need to use Passive FTP instead of Active FTP. Most routers block Active FTP. Passive FTP is rarely blocked.
You need to use a router that supports Active FTP, or you can use a different FTP client. Unfortunately, Microsoft command-line FTP client does not support Passive FTP. You need to use a GNU version FTP client, or any GUI-based FTP client, such as FileZilla.
Alternatively, you can use DriveHQ FileManager for automatic folder synchronization, or use our WebDAV drive mapping service, then use DOS command to copy files directly.