Well in that case you have a blockage in the system either from Dirt/Grit or Solder, That is the most common cause of failures in New Fridges and yours needs to go back and be replaced, It is not a job that can be repaired because it's impossible to know where the blockage is throughout all the little Veins,I think you are missing part of the problem because you are focused on the +6 Degree temp rise. I am relaying the behavior that I see when I get the error. I subsequently have warm food and temps in the 60's. I also see the same temps on the fridge as I do in the app.
Hope that helps.