DIY Wind Simulator Issues

Hi everyone!

I recently built a wind simulator per a few YouTube videos using Simhubs shaker motor pluggin.

I'm using an elegoo arduino uno and an adafruit motorshield v2. Using a 12v power supply with the VIN pin removed. The programming is fine and the uno is recognized in the app and I'm getting 12v to the terminals but no matter what I try, I can't get any volts to the motor termjnals! I've tried re submitting the scripts, different frequencies, turning up the volume and gain, nothing works. I've tried both under the plugging test and in game and don't get any real power to m1 or me, maybe .02 - .03v.

Any help would be very much appreciated, thank you