The usual cause of a center contact not touching is excessive force when installing the atomizer. The center pin is suspended in a silicone insulator. Push too hard and it recedes back into the insulator and doesn't contact the charger center pin or the one on the atomizer.
As long as you don't press the fire button, you can use tweezers or a flat mini screwdriver to work the center pin back up until it makes contact again. Once you raise it up a little, install your atomizer gently until it makes contact and then give it no more than 1/8" turn to snug it down. Overtightening will just result in damage and failure to make contact with the atomizer again.
This is a common problem. Be gentle.![]()
Thank you Dave for the information on the construction of the connector.
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