First, check the battery status of you Besanna Scanner.
Second, the Besanna Scanner works when making contact with the skin. Place and hold the Besanna Scanner probes on you pet where you can find the least amount of fur, typically under the belly. You may need to nuzzle the probes through your pet's fur. Because moisture increases the skin conductance between the Besanna Scanner and your pet, applying a pet-safe lubricating gel to the Besanna Scanner probes may improve your connection. Besanna recommends lubricating gels such as ultrasound gel, O B lube for animals, veterinary lubricant, or water-based personal lube.