Flash requirements Acrobat Pro XI

I have a dozen team members who will be sharing a form that I created to gather data from regional managers on a regular basis. All of the team members now have Acrobat Pro XI (most recent version available to us).

They can distribute the form to managers. The managers can fill out the form using Reader and return it. But when my team members double-click on the submitted results, they get an error message: "To view the Flash technology content in this PDF file, please install this version of Flash Player that supports Adobe REader and Acrobat."

My IT support person said it's because Windows 10 doesn't support Flash (about half of the team is on 10, the rest of us are on 7).

Aside from that issue, should IT be attempting to install the ActiveX version of Flash or the Plugin?

Thanks!