Freezer working refrig not working on LG Model

Brand:LG
Model Number:LRTLS2403S /01
Main Symptom: Freezer works, refrig. does not work
What happens & when: There is a plastic hood under the freezer on top of refrig. Has 3 green lights working but cannot press to turn off or adjust temp. There are (2) screws that I removed but cover doesn’t come off there may be a 3rd screw but I don’t want to force before seeing a diagram for removal. Any help much appreciated. You can call me at 703.635.9990. Thanks!

Error Code (if any):
Parts or tests already tried:
Photos / video link:

LRTLS2403S /01 Per LG those lights are just to indicate a fault. I have included the diagram for which lights mean what.

The actual control board is located under a removable panel on the back of the fridge. on that panel there is an LEDF. Check to see if it is blinking and how many times.

Provide me with that information so I can help you in further diagnosing your issue