It's important to keep the sensors and the vitamin tray clean. It's especially important to keep the sensors clear. If they are not kept clear of powder this may result in the dispenser not being able to read the pod correctly. This could cause you to receive only water in a shot. Take a warm damp cloth and wipe the inside of the vitamin tray. Please see picture below.
If you continue to have trouble, please reach out to our customer support at firstname.lastname@example.org