I have a 7300 tandem Amana washer and dryer, 6 or 7 years old. We recently decided to stack the appliances and got the proper stacking kit for this model. Worked fine for about 15 loads, give or take, then problems began. Now it fills with water then stops, light flashes and it beeps three times in intervals. Door won't open. But when I press power button it starts to go again but then soon shuts off and unlocks the door. Laundry is soaked and has not been washed. It can spin and drain when I set it to the "spin and drain cycle", but it does not go through the wash cycle. Does it have anything to do with the stacking? Or is it a coincidence and something easy to fix ourselves?

Photography - Amana - Tandem 7300 Washer and Dryer Stack Assembly Kit