PDF Form will not fill in Firefox

Hello all,

I am having an issue with a form filling in firefox. I have a E-Learning course that auto fills a pdf form based on responses to questions asked to the user. In all other browsers I've tested, this function is working just fine(IE & Chrome). I did a bit of research and found out that in firefox's application settings there should be a way to preview in firefox using acrobat dc. I found that using this article Configure browser to use the Adobe PDF plug-in to open online PDF files . The unfortunate thing is that I do not see this as an option to select.

I've ensured the acrobat add-on is enabled, and my operating system is windows. I did also notice the screen shot of the preferences menu looks rather different than mine, but I've cross checked and ensured my version of firefox is the most recent. Any advice or suggestions would be appreciated.