Purchased a starter kit and my 1st time vaping and after a use of one of the tanks now flashing 3 blinks but with other tank both batteries work so it is a coil issue maybe? also the rubber ring inside of mouthpiece pushed in and cannot seat on that one with no way to take band off to fix so am guessing that tank is garbage now? Down to one tank and ordered a mini Davide where original got from canadavapes. Am enjoying vaping set aside this one bad tank. been a couple days and only 2 analogs since, coming from a 23 year habit and 15-25 analogs a day. Hoping this vaping thing will keep me off analogs and my goal is to phase out vaping and the need for nicotine a little down the road.