Reason 1: Water or electric failure.
Solution 1: Check power and water supply.
Reason 2: Pause button is pressed?
Solution 2: Deactivate pause modus.
If the door is locked and can't open, you can try to use the emergency bar to open the door.
Use a coin or key to inset the gap and open the filter cover
Pull the hose out and open the block to let reminding water going out.
you can pull the emergency bar to open the door.