First, check that “Acceleration Data” is selected in the Hardware Setup for the myoMOTION receiver. Open the Home tab of MR3. Select “Hardware Setup” in the right toolbar. Drag the myoMOTION receiver into the Active Devices field (if not already) or double click on its image to open its hardware setup. Select the checkbox next to “Accel. Data” in the bottom field of the myoMOTION hardware setup. See image below: