The main reason for this issue is due to the pod not being in contact with the electrical connectors inside the device. Firmly push down on the top of the pod to achieve direct contact between the pod and the connectors inside the device sleeve.
Please ensure that the two holes on the sides are not blocked/clogged. These holes are responsible for airflow and debris can accumulate over time in these holes causing airflow issues. Please clean these holes to facilitate proper vapour production.
If the issue still persists, please contact the STLTH Customer Support Team through the Contact Us Page.