These are 2 perennial issues on Whirlpool bottom freezer models. It is a shame Whirlpool intentionally sells faulty product. Count on these happening within 2 years of purchase.
The Ice Maker fix is very easy, once you figure out how to remove one from a French Door style fridge. The lower panel located on the left side can be removed by placing a flat screw driver in the slot and moving the tab to release the panel. This panel holds the ice maker in. There is a white plastic tab on the ice maker module that releases the whole unit. Pull the unit out and replace the ice maker and return.
The drain fix was harder. Installing the drain p trap tube requires adding a small adapter first and then applying the tube. The hardest part is releasing the old drain shoot. For some reason there is a tab that needs to be released first. Very difficult considering the location. The symptom of a clogged drain is ice forming on the condenser coils and in the pan behind the back of the freezer wall. I could not get the upper tray out so had to resort to using a hairdryer to melt the ice and blow it into the freezer floor. It took 20 minutes but once the drain unfroze, all was well.
I'll probably being replacing the ice maker a few more times. Appliance Parts Pros was very good in delivering the parts fast.