Logging On To The Admin System - Eonic/ProteanCMS GitHub Wiki
When you are sent a link to the demo version of your website, you will also receive your username and password.
To get to the login screen just add the word admin to the end of the URL (the web address) for your site. For example: http://yoursite.co.uk/admin.
The above login screen will appear.
Enter your username and password then click on Login.
You will now be taken to the dashboard of your website.
Once logged in you can create another user account if needed as showed in the following section Let's create a user account.