I've had mine for a couple days now. Im using a 510 LR atty on it. I didnt have to mess with it at all to get it to work, same with the CE2's. Guess I got a good one lol. The vapor is sweet, and im just really enjoying it. I have not charged mine since I got it and I still have 2 dots lefts. Also, my door on my bottle is very clicky and stable, I have not noticed it coming off or being loose at all, but I saw in your vid and another that this happens. Again, I guess im lucky. I probably would not pay anywhere near 70 bucks for this, but I got mine on sale and I think it was worth what I paid for it and then some (which was half price).
This material they used for the case bugs me though. Its a moisture magnet. If you have any oil or moisture at all on your fingers it shows up on the case and it gets streaky.