Basic FTP Problem

I was trying to setup FTP on my ReadyNAS Duo (RAIDiator 4.1.6 [1.00a043]) for uploading photos from my iPad2 via GoodReader. But I could not get it to work. So I tried PhotoSync on the iPad and that did not make any difference. And neither did using FileZilla from my PC. So, I figure I must not be setting it up correctly on the ReadyNAS.

Here are my FTP settings:
Port:21
Authentication mode:User
Allow upload resumes:Disabled
Passive ports:1024-65535
Masquerade as: ReadyNAS1

Then in Filezilla I entered this:
Host: ReadyNAS1
Username: <my user name>
Password: <my password>
Port: 21

Here are the messages I got from Filezilla:
Status: Resolving address of readynas1
Status: Connecting to 192.168.1.103:21...
Status: Connection established, waiting for welcome message...
Error: Could not connect to server

I have assigned the NAS an address of 192.168.1.103. And both my PC and my iPad are on the same LAN as the NAS.

Note that my userID is assigned to a primary group I called "family", not the default "users" primary group. Also, I just enabled FTP today, without a NAS shutdown/restart. But I applied the change to enable FTP and the screen did not indicate a boot was required. I found a screen within FrontView, User & Group Accounts, Preferences pull-down bar that has an option called "Make home shares available over FTP", but it is grayed-out, so I can't control it.

Seems like a simple problem, but I just cannot seem to get it to work. Any suggestions would be great!

Thanks.
Tom