How to fix UNI flashing error?

Here is a question from one fan.

no matter what tank I install, even a brand new one, it just flashes 3 lights on the front… there is a small metal piece sticking up in the bottom of the chamber.. it moves up and down.

vape tips:

The little copper in the middle is the contact points.
The UNI device flashing 3 times means it’s incorrect connection, please try to use a Q-tip to clean the contact point.

Or tyr to loose the adapter a litter.
Or try to contact the heap shop to help you fix this problem.