It won't get hot

It will not get hot

Check, in order:

• Ash. Ash on the fire grate and in the drawer chokes the air. Clear it every cook (the manual; Kamado Joe's chef).
• Vents. Both fully open while lighting.
• Charcoal. Too little lit. More charcoal means more heat.
• The dome. Open 10 minutes while lighting, then closed (the manual).