I too have the switch issue. My pedal is in warranty and support told me regardless of warranty they would fix my pedal for me free of charge. It's only going to cost me a couple of days time and shipping.
I removed the seven screws to visually inspect my pedal for dirt/ debris, loose cables or other obstructions. I found that the button is soldered onto the PCB board and the footswitch button just rests on top of it. When I put the back on the footswitch works now only some of the time. I will be sending mine in for repair.