Sounds Like The Standard Problem Of The Center Pole (electrical contact) Between The Battery and Atomizer Are Not Touching When Screwed Together (Due To Different Lengths & Variances). Assuming You Screwed It All The Way On (Never Crank It, Slight Turn To Touch Only).
The Center Contact Post Got Pressed in A Hair, You Can Lift It Back Out Very Carefully With A Paper Clip or Round Wood Tooth Pick. Just Give It A Little Tiny Rock, Then Try It, Repeat If Needed. But Be Gentile, Read Below.
What: You Have To Be Sure Of The Connection.
How: The Center Pole On The Battery or The Atomizer Can Be Gently & Carefully Lifted out a Half MM Or Less!, Don't Twist or Turn It, It Sits in a Silicone Grommet. Easy Way to Do It Is With A Little Metal, Plastic or Wood Pick, Insert In Hole, Gently Wiggle At & Up At 12 & 6 O'clock Positions. Don't Over Do It, Just Do Each Spot One! Then Give it A Shot (Meaning Try It Out). Again Very Very Gently! And Don't Turn Or Twist It.
That Should Take Care Of It, Check My Other Posts As Well.
~Keep Vapin~!