How to properly seal the drain in the refrigerator? And how to clean the condenser coil?
Who knows what caused the plug to pop up possibly ice forming and jacking it up multiple times. The condenser coil can be cleaned with soapy water, don’t use any type of acid cleaner as fridges have aluminum condensers almost always and  have for years. I use a foaming non acid coil cleaner but that would make a big mess , simple green and a squirt bottle again you may have a mess but spraying it down is how I clean most of the condensers I work on.