Can’t change fonts – GIF Emoji Keyboard - New 5000 + Animated 3D Emoticons Keyboard for iOS 8 & iOS 7 FREE Review

I really like the app except for not compatable with Facebook and messenger but I can’t change fonts I don’t see it on keyboard it’s on the one on my app but I click it and the app closes ?
Review by danaomg on GIF Emoji Keyboard - New 5000 + Animated 3D Emoticons Keyboard for iOS 8 & iOS 7 FREE.