Been using the Cool Fire 1 for about 6 months now, replaced the tank once before with some Kanker product, now I've bought the Atlantis 2, Aspire. After attaching the tank, waiting for the juice to soak and attempting to fire the Cool Fire 1 the on/off/fire button shines a solid green light for 7ish seconds and the vape does not fire. My battery is charged, the machinery is freshly cleaned, and while the Atlantis 2 is not attached or any other tank is attached the device fires appropriately. I looked for a while and can't find similar issues, or don't understand the problem well enough to identify similar issues. Any idea what's wrong?