Kathy: maybe this will help
Here's an article that can help: https://www.thekitchn.com/5-things-to-know-about-cleaning-your-built-in-ice-maker-246479
Hi Kathy: Here are a couple of sites that may help:
Mix 2 cups of white vinegar, 2 tbsp. of lemon juice and a cup of water in a spray bottle. Put the lid on the spray bottle and swirl the mixture around for a minute. The lemon juice is optional, but it helps remove any moldy smells. If the ice machine is really dirty, use full strength vinegar.
I do this at home you might as well try it.