OK, but... if a device presents a UI of some kind, with a control that is presented to the user to perform some action, and the device fails to perform that action when the control is operated, then the problem is NOT with the user. There is either a system failure, or a design failure.
Bluntly, if the situation is "I pressed the button and it didn't do the thing", that is the correct time to involve tech support. It should do the thing when the button is pressed, that's what the button is for.