Site Builder - Cannot Login

I built a site using SiteBuilder and when I try to login as the admin using the FTP credentials it gives me the error:
ERROR: Can’t connect to FTP hostname (  I can’t get the system to issue a PIN code either, the email never arrives?

Yes, the current website builder is quite bad. We know, we're looking on how to make it better. But the current site builder is a mess of encrypted code, so it's virtually impossible for us to diagnose any problems.

I'd recommend to skip the site builder and just use WordPress instead.