Why is it that my cat won't use the litter robot?

There could be several reasons why your cat is not using the litter robot. Cats are creatures of habit and may be hesitant to try something new. Additionally, the noise or movement of the litter robot could be scaring your cat. It's important to give your cat time to adjust to the new litter box and provide positive reinforcement when they use it. If the issue persists, consult with a veterinarian to rule out any underlying health problems.