Thanks for posting the vids... I tried mine a couple of times last night and was getting ok results, some vapor at first then noticing it not hitting so well. I just now tried the- press the button technique - (like in the video above) to warm up after green light, and held it about 10 sec before hitting and got much larger hits, one after another, every time this way.
I don't know if this was the intended use of the device, but it seems to be working better if you hold the button about 10 seconds before hitting each time. I do need more time, to get to know this device a little better though, I've sort of rushed through the learning curve. So far it seems to be doing better with the button held down. I'm not sure if they meant to have it work the way described and it just isn't performing correctly, or if they have the instructions translated wrong. Yesterday, the few times I tried to use it as instructed, I would let it turn green, then hold the button for almost 20 seconds to raise the temp, then let go (turning green) and then try to hit it, assuming the temp got raised and stayed there. It would give me a hit or two, then the next try would be almost no vapor, so I would hold the button for another 10 sec or so again, then let go for the green light and hit it... same results. I do think you are onto something payton...