In reply to Marcus Tibesar.

You are absolutely right. As the author of the plugin, I’ve shared this discussion with the Freemius community, since I care about that sensitive data and we should not be asking for that sensitive information.

What “opted in” users mean to us in our Freemius dashboard, we see those opted in users, if they uninstalled the plugin, why they chose to uninstall, how many active installations, if they are happy so far etc. That is I think the actual reasoning behind the “opt-in” functionality.

Maybe they do something about it in the close future. We are just using Freemius because they are the only best solution to allow us seamlessly and effortlessly integrate Pro version of our plugin to the users requiring it.