Thank you for your reply.
There is something I´m not understanding here.
In the documentation for the Perfect server, you are instructed to install PureFTP and create an ssh certificate for that. Are you not supposed to be able to create an ftp user from the ISPConfig admin page for the websites you have setup? Should that ftp user not be granted access to the website you have created?
When I try to get access to the website I created within ISPConfig I have no luck with the ftp user created within ISPConfig, regardless of using ssh or ftp.