Our apologies for the delay in responding to your 1st question. No, there is no functionality to allow for password protecting the editing capabilities. We have this functionality in the roadmap of our new plugin, E2Pdf.com, however, we do not have a timeline on the upgrade.
We have worked-around this ourselves by building in editing capabilities to the Formidable Forms web form and PDF download capabilities using Formidable’s Views.
We remain at your service.