Hey guys, I got Vapr a few months ago and at first it seemed to of been working fine, and the other day I went to go charge the main unit and the vaporizer and they both charge as they should, according to the LEDs and I used a brand new cartridge yet no smoke comes out whatsoever. Anyone know what the problem could be? I went on sansminds and bought a replacement heater coil so I hope that does it. But If anyone has overcome this problem any input would be helpful