Certain Fonts not showing up in "Display text in a window"

I am building a randomizer for a tabletop game, and I'm trying to incorporate some of the symbols used on the cards in my pop-up windows.

I've installed the font and it works in other apps, but when I try to change the font in Keyboard Maestro, the letters just automatically change to Helvetica. Other fonts are working. I tried to change my text to the Dingbats font, and that one doesn't work either.

Is there a workaround on this?