Not keeping cold both frig and freezer side.

First you need to check if the compressor is working properly.
Remove the rear panel and look for a cylinder with bunch of copper lines going in and out. feel those copper lines one of them should be warm and the other should be cold. Also you should hear the compressor working (pretty noisy) when the temperature in the freezer is not cold enough. If the lines are about same temperature and the compressor does not seem to work, the first place to check is the starter relay. Often the relay breaks. The part is WHIRLPOOL 2188830 2220475 RELAY. I found one on ebay.

Good luck