Thanks for the feedback!
Can you tell me what controller exactly you tried to use? Then I can look into it and see what I can do.
As for the combo:
I'll have to improve the feedback a bit, so a player can understand what he/she is doing wrong.
In the meantime you can try to look at the command prompt. It will light up in the timing you are supposed to do. Try matching your input with how it lights up. Hope that helps!