There is vapor inside the water level indicator of the kettle after use.
This is normal. The water inside the water level indicator can generate some vapor during boiling.
The Kettle cut off quickly before start boiling
There could be many reasons. Check if there is water inside, too little water will cause the kettle to not operate due to safety. Also if using the kettle consecutively the temperature inside the kettle may still be high. Wait until it cools down then try again