I use a cinnamon flavoring to enhance other flavors that I own, so I don't use a lot. My wife does the same thing on a more frequent basis. Her Apollo Valiant has stopped working. The battery is dead. Won't charge at all, it is DEAD. According to Apollo, using cinnamon e-juice voids the warranty. The cinnamon we use was bought from Apollo. Why do they not give a disclaimer when selling this flavor that it will void the warranty? Anyone else have any issues with using cinnamon flavors?