So how much power was it drawing when it hovers?
Now that you have a feel for it, does it work with the 1A supply?
I would get a proper power supply, put it in a UPS battery backup and hope you don't have any long power outage days.
I also noticed they have the door open, and then nose of the car pointing up. I wonder if people are trying to hover this flat instead if posting the nose up.
The indigogo also said it comes with a battery box, hmmm. At 2A draw those batteries won't last long.
But it said an optional 12V, 2A power pack came with it for supporters.
But I thought you said yours was 15V?