Insta Heater Fireplace

I am so disappointed. First of all what's on the instruction manual doesn't match to what's on the heater. It has 3 adjustment buttons & there is no power button like the manual says. The function adjustment key is what turned on the heater. After turning on the heater within 5 minutes it turned off. The heater was hot to the touch. I waited a while until it cooled down & tried to turn it on, but it won't turn on anymore. The instructions are poorly written. Not worth buying!