The outside of my Rifrig door has "yellowing spots" I have cleaned them off, but now the paint is coming off. There is no leaking. I live in Florida, so maybe the humid weather? What can I do to fix and PREVENT this from happening again? It is a ROPER (not sure how old it is) Thanks for any help!

You need to clean it often, especially under the unit where the coils are. Those coils get clogged with dirt which causes the other systems to fail. I live in Florida, too, and I see this often.