Culinair Af100s 1.7-Cubic Foot Compact Refrigerator, Silver and Black

How should I use it? After I plug in, the light is on. But after a few minutes, the light does not burn. And the fridge does not cold at all.

How cold the temperature this fridge can reach? Is temperture adjustable?

Did anyone notice that it says that it cools to 51 degrees? Is that even safe?

Will this fit a gallon of milk