Could you explain further please?
Just so I am absolutely sure about what this plugin does:
Everything regarding ACF revolves around a user registering on the site first - Yes/No?
Custom fields cannot be created and displayed on the add new ad page like they can using the classipress custom fields and form layout options?
This plugin only allows the option to create custom profile fields and once created, display these fields on various pages other than the add new ad page?
The only time you can get anything to display on the add new ad page is when you set it to pre-populate the standard fields which are there by default?