1. The theme uses the native WordPress user functionality which does not have an option to approve users (although you can approve listings). It would require customization/plugin use to do this.
2. & 3. These are not default features of the theme and would require customization on your part.
4. There is only one email address per account (as per WordPress user functionality), and a listing is assigned to one author so this would not be possible by default.
5. The theme has a custom form feature for project listings but not for users.
Our themes are not encrypted, so you are free to make modifications if you wish. Whilst we don't offer customization services, we do have a
certified partners page where you can find developers for hire. Thanks.