After I mixed all ingredient and put in the machine, closed the lid and tried to change to "15" to make dough by pressing on "Select" (the display showed "0:00", but all I see is the display changed to "1" with a little dash under "complete". As soon as I lifted my finger off the "Select", the display went back to show "0:00". Does it mean that it is stuck in timer mode? What can I do?