Si estás teniendo error de: “Failed to retrieve directory listing”, por ejemplo:
Status: Resolving address of ftp.mywebsitename.org
Status: Connecting to 234.234.234.234:21...
Status: Connection established, waiting for welcome message...
Status: Initializing TLS...
Status: Verifying certificate...
Status: TLS connection established.
Status: Server does not support non-ASCII characters.
Status: Connected
Status: Retrieving directory listing...
Command: PWD
Response: 257 "/" is your current location
Command: TYPE I
Response: 200 TYPE is now 8-bit binary
Command: PASV
Response: 227 Entering Passive Mode (11,234,234,234,167,111)
Command: MLSD
Error: Connection timed out
Error: Failed to retrieve directory listing
Entonces tendrás que ir en FileZilla > Archivo > Gestor de Sitios > Cifrado > Only Use Plain FTP (insecure) clic en Conectar y listo.