Here is a question from one Yocan HIT.
I just got yocan hit no smoke i tried all temps. What can i do
Please can you check the dr y herb material after you hitted the fire button, did it brown or burnt?
And please try to set the temperature higher than 400, then take a long very slow pull for 10 to 15 seconds.
If your device still can't work, please make a short video and send it to me.Thanks in advance.