Zhao Yitian

Hi xBrightYve,
I am not very familiar with Reason 9.5, but I think you can just select standard MIDI controller driver setup in Reason for Xkey, you do not need to load any special template for it.
In addition, please make sure when you plug Xkey37 with your computer, the red LED on rear panel will keep lighting, that means the computer detect Xkey37 as the USB MIDI controller successfully.