Changed freezer seal,bottom half of door won't close tight

that indicates that the door seal is too hard and not sealing properly
have it replaced and the problems will possibly be solved
what is happening is that on closing the door
the cold are creates a vacuum that holds the door closed for a few seconds until the temp evens out, the same as for freezers
when that vacuum is not being created , it means that the cold air is still allowed to leak out past faulty door seals

Make sure the doors are closed tight - freezer door may open a crack when frig side closes.

If door is tight, make sure the door gasket makes a tight seal. Often they need to be cleaned (409 is my favorite) or they get twisted. They also sometimes come away from the door in spots. Pay attention to the bottom seal which you usually don't notice in daily use.

The defective door seal is the problem.

the most common problem is a bad sealing door ,when the door is closed it is not supposed to let warm air in and cold air out ,but if the seal is faulty then the opposite happens and this causes the build up of ice,take a good look at the door seal a good way of finding out if this is the problem is to run your fingers around the seal when the door is closed for a while if faulty you will find a warm spot where the cold and warm mix causing a warm spot.adrian,,,,,,,,,,

feel door seal after door has been kept closed for a quite a time.If it feels warm at any one spot door seal needs replaced.adrian;;;;

If every coil , from the bottom one to the top one, are frozen, either the door is not closing right or the defrost timer is bad , but if half or less part of the coil is frozen , that means the unit is low in refrigerant and the leak has to be repair ( this is a seal system ) and after that recharge the system.

Adjust the front legs of your refrigerator slightly to raise the refrigerator. and and store items on the freezer door shelves to add weight. This is a problem of pneumatics and a testament to how tight newer refrigerators are. When you close the large refrigerator door it compresses the air in the refrigerator compartment. Both compartments are connected by air passages and thus the pressure change is transferred to the freezer causing the freezer door to pop open.

Raising the front of the refrigerator a tiny bit will help both doors close from the 90 degree point, which is desirable. Adding weight to the shelf will just help the process.

An additional aid in self-closure will be to use vegetable oil on a paper towel to wipe down the hinge side face of both door seals. All these maneuvers should aid in causing the door to stay closed and re-close if it should open slightly. Good Luck

Test the gasket by closing the door on a dollar bill. If you can pull the dollar out easily then the gasket is not sealing. If the gasket is OK then the auto defrost function may be not operating. High humidity and opening the door frequently can also cause some frost build-up.

There might be something logged in between the doors. Check really good

Check for possible products keeping door from fully closing, Check level of refrigerator and possibly raise the front adjusters found at bottom front near each corner.