Another feature of the 816?

Hi. I bought all the same UR816C and an incomprehensible situation immediately formed. The interface sees and reproduces the signal from the guitar to input 1, and even processes it, but it does not enter the DAW (Cubase 11 Pro). From 2, 3, 4 etc. the signal is sent and recorded, but not from the 1 In. What could it be? Is the interface defective or is it the manufacturer’s intention? I did not find this feature in the documentation.

I’m sorry. Wrong. All Ok.