ISPConfig FTP problem

O people of expert i have problem regarding FTPdPro on ubuntu server 8.04 LTS i followed this tutorial http://www.howtoforge.com/perfect-server-ubuntu8.04-lts-p6and i install ISPconfig as hosting control panel , I have created a new user in the hosting panel under ISP Manager > new client > then give it FTP access when i try to connect to the ftp server connection fails because it seems the user is not created or creation trhough ISPConfig is not working
Connected to x.x.x.x.
220 ProFTPD 1.3.1 Server (Debian) [::ffff:x.x.x.x]
Name (x.x.x.x:administrator): scu
331 Password required for scu
Password:
530 Login incorrect.
Login failed.

Thanks in advance for your help

 

Thanks for your reply
yes i did do check the FTP access checkbox and i tried to add the prefix web1_ to user named scu becoming web1_scu
but the login fails
i do access client's host control panel with the following data
user : scu
pwd : scu

 

Thanks for your reply
You mean grep isn't it
here's the output
root@mis:# grep scu /etc/passwd
root@mis:#

 

Did you create a user for that web site on the User & Email tab?

 

The CP login user is not equal to the user that may access via FTP. For FTP you need to create a user via email&users and give it administrator rights.