Fall of 2017 i came across the same problem. After charging it, it still didn't produce cold air. So i saved up for the AC Compressor and installed it Spring 2018. It blows super cold air. Need it for SoCal summers.
Same as DJ, tried charging it with no luck. Put in a new compressor, charged and bingo. I was hesitant to do it because I didn't flush the whole system but that was 3 years ago and no problems. I bought a reconditioned compressor, some coolant and did it myself. Oh yeah, I also rented the tool to create the initial vacuum in the system.(it was a free rental from Autozone) Cheap and relatively quick job to do on your own.