I have been using Smaereefi 16A switch with my pump. It was working perfectly till recently but since last two days it has stopped switching off after the countdown is over. When I start countdown to switch the motor on for say 60 seconds, it immediately goes on but doesn't switch off after 60 seconds. I have tried it multiple time but this is not working. I have tried restarting switch as well as my wifi router. What could be the reason and what is the solution.