Multisite - network users issues
Other directory themes have issues with Wordpress Multisite network users - basically, from the
WP Codex:
By design, all users who are added to your network will have subscriber access to all sites on your network.
with Users that signup on a completely different site get added as Active members of the directory - while they may not have the same 'role' permissions they end up being listed in the directory. For example a real estate directory with paid membership to be listed as an Agent, shows a list of all users on the network as being 'Agents'.
Do your themes have this same issue?