Hey Mardhol :)
Thank you so much for playing!
Regarding the Layout thing: apart from the on-screen keyboard in the setup screen simply "looking" wrong the game should work on all layouts the same. The mentioned on-screen keyboard during the setup screen is only there as a fancy visualisation while you enter the finger and player count. Apart from that you are free to use any layout. Or am I missing a thing then? I'm not sure how Unity handles AZERTY though :P
Regarding the crashes: I'm sorry to hear that :( We are not aware of such crash heavy bugs. Can you provide any information that might help?