When trouble-shooting didn't fix the problem I was having, PortionPro promptly sent me a new feeder that works perfectly. I couldn't be happier. This feeder really helps. We have a cat that raids all other food bowls if not supervised and became morbidly obese from stealing food. With the PortionPro feeder, we are able to exclude him from the other cat's food and the dog's food, and yet allow them to free feed. The little guy had abandonment issues and food insecurity after being on his own. He ate gluttonously after he arrived in our household, but now he is at a healthy weight by following our vet's prescribed feeding program.