Hi DarkChachouke! Thank you for playing WitchTempo <3
The controls are: Z for red fairy, and X for green fairy. Really sorry that this wasn't made clear!
Alternatively you can change your key settings in the settings menu!
I know it, I already tried it too. I probably did something wrong but I don't know what unfortunately. I'm gonna try again for some time or try to re download it, for the moment, I'll let you know how it goe