deleted member site accidentally

Both questions related to the membership plugin:

1. I had someone register and pay through paypal. When they select a username and password, how can I have their site set up automatically in the multisite environment? It seems like the username they selected somehow got tied to my primary site in the multisite.

2. I had set up manually a new site inside the super admin area for this same person, but it wasn't tied to the membership plugin. Now I wondering if their subscription set up in paypal will continue to charge them.

3. Do I as he super admin have access to their password also? Can I log into their dashboard?

Any ideas how to restore their site with the subscription intact?

Thanks, Joe.