Instant Vortex Air Fryer's power turns on briefly, then goes off

Hi all. I'm attempting my first appliance repair with my Instant Vortex air fryer, and before I go taking it apart I was hoping to get some advice on how to logically diagnose and approach the problem.

The Problem

Upon plugging the air fryer into a household outlet, the display will beep and briefly turn on before displaying the message 'OFF', and then turning off completely and rendering the appliance unusable. Below is a video demonstrating the behavior.

Any suggestions on how to approach this problem would be greatly appreciated. I'm a total repair noob, so really appreciate the help!

Ben