As Wild Card said, the outside extreme cold is preventing proper functioning. Nothing wrong with the refrigerator. Think of it this way, if you were to put a refrigerator outside and leave the door open in 32 degree weather, the refrigerator compressor would never turn on, as the compressor is set to run at (say... 34 degrees). If it doesn't run, the freezer does not either. Now in time, everything in your freezer begins to thaw and melt. In essence, RV refrigerator-freezer are like that too. If the ambient temperature around them is colder than the settings, they simply don't run. About the only solution is to block the outside vents some so the temperature around the outside of the refrigerator is warmer, and there's not so much heat loss when it does try to run.
And, about your frozen items? Why not find a conventional ice chest-cooler and simply fill it, and set it outside! My goodness, in Indiana, it's been everywhere from -15 to zero for days and days now. We actually have some frozen stuff sitting outside (at home) in a cooler right now.
Good luck!