Can't see my Rafflecopter widget

I’ve got my Rafflecopter code all set up and the widget looks fine in the preview. However, when I paste it into my post all I see in the preview screen is “a Rafflecopter giveaway”

I refreshed the preview screen several times, made sure the “more tag” is in there and also made sure javascript is enabled.

Any ideas??

my self hosted wordpress is at https://www.zephyrhillblog.com