Hey guys, just got a buck naked express vape pen today from a gas station and I can't get it to work. I charged it,the light on the charger turned green, and I filled it. The directions say to press the button 5 times to lock or unlock it, but no matter how many times I press it, 3, 5, 10, the light on it just flashes twice and it does't work. If I hold it down, the light flashes twice. If I press it once the light flashes twice. I've tried everything and all it does is flash twice. There's no sound to indicate that it's heating up or anything. I've tried loosening and tightening it. Am I doing something wrong or is it broken?