It may be as simple as turning your coil one more turn. I don't love making my vape equipment super hard to unscrew, but with coils, you really have to screw them in quite tightly. I too have gotten the "check atomizer" warning, and once, it was a bad coil, the second time, I had not screwed the coil in tightly enough. With new coils, I now check to see if it's going to fire before I refill my e-
juice, having to waste it on fixing problems. I need to go get me one of them injector kits to suck the 0.8 ml of juice out of my tank, for sure! I just hate wasting juice and a vape shop near me sells them for a dollar, roughly the cost of emptying that juice down the sink and fixing the problem.... I've realized now that my box just needs a really tight coil screw to register.... If that doesn't work, the other suggestions are a great idea.
Anna