Crazyroadio without PA - injection not working

[Dring20]

I have Crazyradio without PA, when I want to inject scrypt nothing happens on the other computer.
[+] Select target keys (1-1) separated by commas, or 'all': [all]: 1
[+] Ping success on channel xx
[+] Sending attack to xx:xx::xx:xx [Microsoft HID] on channel xx
[+] All attacks completed
Script:
GUI r
DELAY 200
STRING notepad
ENTER
What is differences between Crazyradio and Crazyradio PA.
Thank YOU