Connection DJM 750 MK II with rekordbox device-settings

Hello,
I want to connect my DJM 750 MK2 to rekordbox and DJ with 2 CDJs 2000. With my old MacBook it work perfect. In my new one, rekordbox registrates that the DJM 750 MK2 is connected but even if I‘ve downloaded and installed the newest driver and firmware I can’t go to the device settings in -> Preferences ->Audio -> Input channel. There it appears that my device doesn’t have this device settings. But without that I don’t have an audio signal on my CDJs. In 14 hours I have a Booking so it would be great if somebody can help me!🙏🏽