There may be poor gel pad contact with your skin.
Before removing your belt to troubleshoot ensure the controller is switched off. You can do this by pressing the Power button on your controller for three seconds.
- Remove the belt.
- Remove the gel pads.
- Wipe the metal studs with a dry cloth.
- Replace the gel pads ensuring the metal studs are covered.
- Put the belt back on and switch on the controller.