John, it's a long shot, but if the keys are silent and everything else work, as i.e. if play a midifile, then maybe the 'local' option is set to off.
There is a feature someplace in the menu, maybe in the midi part, where 'local' can be set to on or off.
Hopefully is it as simple solution as that.
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Cheers 🥂
GJ
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"Success is not counted by how high you have climbed
but by how many you brought with you." (Wil Rose)