i had the same issue today.and that how I saw your video as well.. luckily the trick was after my last refill there was some disconnect in the coil or what ever it is called. i unscrewed it completely and cleaned the atomizer the middle part with a clean dry cloth and re connected perfectly and I connected to tank to the battery and charged it. it started charging like before.. the reason I felt is it gets to safe mode kind of thing if it finds something wrong while powering and then it does not charge or fire until all connections are proper. i was mad 2hrs finding a fix, and finally this worked for me. do comment me if this helps to any one of you.. Cheers happy vaping..