Hi there. When you say it hasn't worked properly, please be specific. Is it working at all OR what's the specific issue you're having?
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I see. Sorry I changed this to Q and A but your status was shown as offline. Open the door straight down all the way. Does the door appear to open more than 90 degrees? The fact the door pops open and that you need to lean on it suggests there may be a problem with your door hinges. Also, the door latch/ switch assembly might not be installed correctly. It's hard to say about that though but you said it was replaced. One other thing is that the door may not be aligned properly side to side. If you open the door, place a sharpie mark dead center of the top of the door liner. Close the door slowly and ensure the mark you made is dead center of the strike. If it's off more than a 1/4 inch either way, left or right, that's a problem.