LG Refrigerator and Freezer not cold

I have an Lg French door refrigerator with an in door ice maker. It is 2 years old. The refrigerator and freezer arent cold. The compressor is working as well as the compressor fan. The condenser is clean and free of dirt. I took the inside of the refrigerator apart and evaporator fan and ice maker fan are both working. One of the lines going into the evaporator is a little cold but mostly the lines are warm on the evaporator coil. I was wondering if anyone had any ideas. I had two different techs over to look at it and they both told me something different. Thanks so much