It doesn’t work but I like it – Keyboard Maker by Better Keyboards - Free Custom Designed Key.board Themes Review

Hi the app doesn’t work every Time that I try to apply it just shows the normal keyboard I even tried powering off my phone and powering it back on it still shows the normal keyboard please tell me if there are any ways to fix this bug
Review by None of yo buissnies on Keyboard Maker by Better Keyboards - Free Custom Designed Key.board Themes.