Cannot connect to Aggregate Server

What is the problem? Please be detailed.

I have tried setting up the Aggregate server but cannot login as it says the "site cannot be reached, server IP address could not be found"

What ODK tool and version are you using? And on what device and operating system version?
Windows 64

What steps can we take to reproduce the problem?

Not sure

What you have you tried to fix the problem?

Anything else we should know or have? If you have a test form or screenshots or logs, attach here.

What do your Tomcat logs say?