[Multisite Privacy] Multisite Privacy unblock iframe

I would like to know if is there any possibility to \"unblock\" a iframe.
I\'m using the multisite privacy plugin to restrict the access from different users, the problem is that i need to use a iframe to show a form in a diferente site.

I have a form in one site (intranet) and the user fill the form in another site. For this i used a iframe, and so far so good.

The problem started when i activated the multisite privacy plugin that blocked all access to the site from non registerd users, including the iframes.

Is there any possibility to unblock the iframes or some iframes?

Best Regards,