I had a thing happen with my Darwin last night, I had a 1.5 ohm single coil car to on there and a 510 to 510 sealed adapter on there, it worked perfectly for about an hour or so, and then it wouldn't fire, I looked at the screen and where the Evolv logo is it was showing something I had never seen before, I took off the carto and the adapter, screwed the car to back on, no problem, tried it with the adapter back on there no problem, then this morning the same thing happened again. Is this just an adapter issue?