ETC Element Timecode don't work

Hello, I am a student at a school in Germany. I have an old Element console and want to programme a light show. I have watched several tutorials on how to connect Reaper to the console via a USB MIDI cable. My problem is that it outputs a signal from Reaper, but I get no input signal on the console. Does anyone have any idea what the problem could be? It would help me a lot.
Greetings Marc

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