Masonry Blog Style

I have been trying to get the Masonry Blog option working, and cannot find the Masonry Blog element listed in my blog options under General Settings/Blog Settings. Additionally, when I add the content item for “Fullwidth Masonry” on my /blog page, it still displays as Grid or whatever other option I have selected under Blog Settings.

What am I missing here?
I’ve scoured the documentation and forums and haven’t found anything to explain this. I have viewed the video on Vimeo regarding the Masonry elements with no luck at resolution.

Additionally, I downloaded and uploaded the most recent Enfold template yesterday. I loaded the dummy content and still cannot find a Masonry Blog — even with dummy content.

Thanks for your assistance!