How function the KIO4_FTP

I need to download and upload files to a server, I'm using KIO4_FTP, I don't know how to use it, can someone help me?

already Kio4 has shared detailed guide along with blocks
Extension Client FTP. Create Web Server, FTP Server in PC with small file 194 Kb - #4 by Juan_Antonio here

I would suggest you look for a more straightforward ftp extension.

e.g.