If you get the message "Controller Not Connected" then do the following:
Check in the System Report that the C1-xMP1 shows up.
If it does not show up, there is a connection issue. Connect the cable provided directly from the MIDI port of the controller, to the computer’s USB A port (not USB-C port).
If don't have a USB-A port of your Mac connect it via a USB-C docking station like this that has USB 2.0 and USB 3.0 ports.
If it still does not show up in the System Report, See this article
If it does show up in the System Report, then make sure that it shows up and that it is active and online in MAC’s MIDI Studio. (Do not rename the C1-xMP1 in MIDI Studio on the Mac) as shown in the screenshot below.
If you have more than one C1-xMP1, delete the additional one.
If the C1-xMP1 does not show up in the MIDI Studio, try Refresh MIDI Setup from the top bar menu option.
and try pressing the Rescan MIDI button
IMPORTANT: If you have UPDD installed and the C1-xMP1 is listed in the System Report but not found in the Mac MIDI Studio, it is possible that some setting/selection in UPDD is causing this.
Uninstall UPDD and reboot the Mac. Check the MIDI Studio if C1-xMP1 is listed.
Please note, UPDD does not need any hardware selection setting to be done manually. It should work without any manual configuration.
Disable the MIDI In/Out of the C1-xMP1 in the DAW as instructed here. The controller should now be found by the MPH plugin shown on the left bottom of the MPH plugin window.
To Troubleshoot further, see this article
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