I’m sad, frustrated

Alesis DM10X, the USB module does not send the signal to the PC (MAC).

Recently bought a Alesis DM10X, and since I bought and I try to connect the module to the computer (iMac), the signal does not arrive on the PC. When rarely module connects the PC, the signal lasts a few seconds and disappears. I did not find any solution so far, what do I do? )));
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