Yes, so you have problems with the fridge as stated above.
Inside the fridge part you see the big aluminum fins. Just insulate those, not all, but start insulating a few. These are what takes the cold from the freezer and makes the fridge cool. If you insulate a few fins then there will be less transfer of heat (cold in this situation in laymans terms).
Maybe as easy as cutting some foam insulation and sticking it between the fins on a few. trial and error will get you to desired temps.
This does not fix the issue causing your problem, but is a work-a-round in a bind.