Can Facebook Registrations add users to the host domain?

When users join with the 1 click feature, they are not getting added to the host domain of the multi-site. Is there a setting that I have missed? Additionally, even though the UFB settings are set to add the full name and the first & last names, they are not getting pulled into their profile.

I have given support access and the sub-domain in question is wun.leadwithanedge.com mapped as wunlivingcommunity.com