Ecommerce Tracking in analytics for Pro sites

I've enabled ecommerce tracking in both my pro sites settings and also in my Google analytics dashboard.

However, when a user pays for a site through pro sites, no ecommerce goal conversion is registered in Google analytics.

Can you tell me what else I need to do in order to get GA to start counting conversions for pro sites signups?

Also, what happens when someone signs up for a free site? I have enabled free sites in pro sites settings, and I also want to be able to track through GA when someone signs up for a free site.