Unable to Process Joker Font Outline Style

FontCreator version 12 works great, however, when I proceed to edit the Joker font, it cannot correct my request with Outline style. Can you help me with this, what other version of FontCreator can be used to do this?
Thank you very much!
Joker font: https://fontz.co/joker-font/

What are you trying to do with the font? (Do read the copyright agreements before editing fonts, even free fonts).