To use Keyser spoofer be sure to follow the steps bellow exactly :
[+] Remove Microsoft account from your PC settings.
[+] Remove all Xbox Apps
[+] Remove Discord Authorization App (FiveM).
[+] Change modem ip
[+] Disable your antivirus.
[+] Launch Spoofer.
[+] Launch Cleaner. ( when you click spoofe it ask you clean fivem yes/no press yes )
[+] Change your Steam and Discord accounts
[+] Open FiveM.
[+] Log in with the new license.