Please check the manual for your vape model. There you will find information for the voltage level change.
If you have a twist knob on your vape - twist it and the voltage will change.
If you do not have a twist knob – to select/adjust the voltage level, click 3x times rapidly and simultaneously. The indicator will change its colors, going from the lowest to the highest voltage.
If you do not have the user manual, please contact us. We will help you resolving the issue immediately.