Connecting to a domain

[TGates]

When you create the FTP account using the built-in FTP Accounts module, you enter the Username, Password and set access type to Full Access then select 'Use Domain Directory' and select the domain's folder.

but I end up on Ubuntu folder on the server

I have no idea how you got to this folder if you used the FTP Accounts module. It is impossible. Did you create the FTP account through SSH or through the Panel?