No signal from Casio ctk-691 to cubase


So I have connected my casio ctk-691 keyboard.
With a MIDI in and MIDI out cable to usb. Connect to my macbook there is singal. But I get no signal in the program.

I have tried different strageties like midi in in midi out midi out in midi in etc.

Does anybody has had this problem before? !

Hi and welcome,

How do you know, there is the MIDI signal in macOS, please?

Make sure the MIDI Port is not used as an MIDI Input in the Devices > Device Setup > Remote Devices (Track Quick Controls, VST Track Controls).