Usually one of two problems......low refrigerant, or actuator problem.....
Check actuators first .....with a warm vehicle, turn A/C off, use vent position, and blower on Hi.....command full hot...temp should be the same on both sides....now command full cold with A/C off.......temps should be the same....
If they are, then the actuators are ok.....even though you added two cans, it's possibe there is air in the system......a low charge or air in the system, can cause this problem...i recommend an evacuation, and adding the proper amount by "weight"....