I've noticed this occur a few times, though it tends to work fine when the support staff check so I'll post the error here in full. Basically the FTP connection isn't listing so to speak...
Code:
Status: Connecting to ftp.#####.com ...
Status: Connected with ftp.#####.com. Waiting for welcome message...
Response: 220---------- Welcome to Pure-FTPd [TLS] ----------
Response: 220-You are user number 7 of 50 allowed.
Response: 220-Local time is now 18:53. Server port: 21.
Response: 220-This is a private system - No anonymous login
Response: 220-IPv6 connections are also welcome on this server.
Response: 220 You will be disconnected after 15 minutes of inactivity.
Command: USER #####
Response: 331 User ##### OK. Password required
Command: PASS ********
Response: 230-User ##### has group access to: #####
Response: 230 OK. Current restricted directory is /
Command: SYST
Response: 215 UNIX Type: L8
Command: FEAT
Response: 211-Extensions supported:
Response: EPRT
Response: IDLE
Response: MDTM
Response: SIZE
Response: REST STREAM
Response: MLST type*;size*;sizd*;modify*;UNIX.mode*;UNIX.uid*;UNIX.gid*;unique*;
Response: MLSD
Response: ESTP
Response: PASV
Response: EPSV
Response: SPSV
Response: ESTA
Response: AUTH TLS
Response: PBSZ
Response: PROT
Response: 211 End.
Status: Connected
Status: Retrieving directory listing...
Command: PWD
Response: 257 "/" is your current location
Command: TYPE A
Response: 200 TYPE is now ASCII
Command: PASV
Response: 227 Entering Passive Mode (64,38,20,134,40,26)
Command: LIST
Error: Transfer channel can't be opened. Reason: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
Error: Could not retrieve directory listing
Command: TYPE A
Apparently the FTP servers are fine from whenever I've enquired so I'm a bit puzzled as to why this has happened a few times, often for a couple hours regardless of where you try logging in.