Upper freezer temp. alright Lower refrigerator to

it needs room to breathe,too many things blocking air flow and turn it down a couple degrees,40 is good

Not sure what you mean by the freezer too cold? The freezer section should be at or below 0 degrees C or 32 degree F. if its working properly. If the FF section is too warm and your temp control door or vent is at max cold either the vent is not moving (stuck in the closed position) or the fan in the freezer is not working.

Good day,
The higher the number the colder the temp. 1 being the warmest.
It takes 12 to 24 hours to realize a new setting's effect. Go slow.

1.If this is only a fridge the one knob will be for the min and the other for the max.
max. : As soon as you switch the fridge on it will cool down the fridge to max cool down temp. example -2deg.
min. : As soon as the fridge reaches the max cool down temp and it had switch the compressor off, the fridge will start to warm up slowly, by the time it reaches the min allowed warming up temp, it will switch the compressor back on and do the cycle all over again.
2. If it is a fridge/freezer setup, the one knob will be for the fidge and the other for the freezer. If the temp in the freezer is fine a fan is activated and blows all the cool air to the fridge and controls the temp. by activating the fan.

turn your freezer temp dial to off and wait 30 seconds, then turn it back on to max setting. if you have temp gauage you can try to check temp inside freezer, if not cold enough (less than 30 degrees) you could be losing freon gas. you need to call technician.

Set the freezer temp control to MAX cold and see if it improves.
If not replace the off/on thermostat.(cold control)

Check those coils underneith. They are making the machine work harder IF they are dirty. They may be full of lint and cobwebs. All that needs to be removed.

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did you check to be sure the the compressor cooling fan is operational? if this is bad it will cause a problem similar to your condition. another thing if this checks ok is that your temp control could be getting weak, ( it has small springs connected to the contacts) and may need replacing. the fact that it will get to 0f tells me that compressor and freon system should be fine.
you mentioned the warm area on the side of your door is a anti moisture feature. if this area is abnormally hot it would indicate a bad condenser fan motor which is the compressor cooling fan.
If you have any further questions let me know thanks Peyton

You more than likely need to replace the control cable between the upper and lower board. It comes as a kit with the upper board. You can also do a bypass test by unplugging your thermoster from the circuit board. The thermoster is the temperature control for the refrigerator nothing to do with the freezer.
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Door edges being warm is caused by what is called mullion heaters that operate to prevent humidity from condensing at these points.
Some refrigerators have an energy saver switch. Turn this switch if you have one to the energy saving position when the humidity is low. Is anything freezing in the refrigerator? If so setting the controls to a little higher setting may solve your problem.