Why does it keep showing "No Atomizer" and how to solve it?

Reason 1: The airflow ring is not attached well-----Tighten the gap between the airflow ring and the coil

Reason 2: The coil is not installed right----- Align the edges of the ring with the pod grooves until it fits

Reason 3: Poor contact-----Wipe up the device connector and the bottom part of the airflow ring with tissue, and scrape the two electrodes in the device gently.