From the website "The Kick will detect, and stop functioning, when a battery charge level drops below 3.2 volts UNDER LOAD (with an atty/carto attached). This is a safety feature. The Kick will tell you this feature is activating when you experience STUTTER VAPE (vapor-no vapor alternating – may feel like tss-tss-tss). If you continue to vape beyond this indicator, the Kick will stop functioning until a fresh battery charge is detected. If you remove the battery and meter test it (unloaded) it may read between 3.4 and 3.6 volts. There are many variables that can contribute to the various unloaded readings."
Variables are whatever amounts to voltage loss in your device. On my bombshell, the threads get black oxidation fast. They need to be kept clean. Clean the 510 connection top and inside. You can clean the inside of the tube where the kick makes contact and I suppose you could get a swab done to the bottom spring. Outside of that there ain't much tou can do easily. Maybe the switch can be fiddled with.
A lot of batteries have a large amount of the mah at voltages below 3.7 volts so while there is rated battery life left only a mechanical mod will use much of it at the lower voltages. Try swapping out the kick with the dummy center post that came with it. If you have a low ohm coil, you can still get a lot of life out of the battery. The flip side is the battery lifespan is extended with the Kick cutoff and then recharging. Running the battery down to it's natural cutoff before recharging reduces the lifespan of the battery.