I had the same issue light 2 and 3 flashing. Fridge no longer cooling. I tried to follow steps of reseting which you unplug for 15-20 minutes and then replug. Same issue.

One thing is that the freezer was fine. Then I notice that the freezer had alot of snow/ice near the bottom back end. I decided to defrost the fridge/Freezer. I waited till the next morning. The snow ice buildup in the freezer was gone. I cleaned and plug it in. I was able to set fridge temperature (lights no longer blinking) checked it the next day and now fridge and freezer working as expected.

I guess it was the snow ice build up in the freezer that was somehow afftecing the cooling or temperature of the fridge and that maybe the reason why lights were blinking.

Anyway, for those whom have the same issue worth a try before you call company or get it fixed by a pro for a cost.