....... I contacted customer support and was told I need transceiver module.
Customer Service... is correct.
X10 works in a couple different ways... X10 sends Radio signals Like the Motion sensor and the CM19A. And X10 uses a signal sent over your homes 120 Volt AC power lines like your camera.
You need a part not included in your kit. The part you need is a TM751 (the transceiver module). It plugs into a wall outlet... and will take the radio signal sent by your motion sensor and CM19A and generate a signal on your powerline for your camera.
The transceiver module is about 12 bucks... but if you look for deals you can spent slightly more and get much more (like an extra motion sensor).