The worms could be in the soil part of the system. If you are draining the tower after rain or watering it should not be too wet.
However, no matter what kind of compost system you have there are other creatures in them. I have roaches in mine and I think I am doing more roach than worm composting. The anoles get in my bin and like to eat the worms, so I have had to replace worms a couple of times. Ants, fruit flies and soldier flies will also inhabit the composter. It is sometimes hard to keep them out. The maggots you see may actually be soldier flies.
https://www.edthatmatters.com/composing- ... -worm-bins
The ratio of food scraps to carbon should be 70%/30%. After adding the food scraps it should be covered with a carbon layer.
I tried a tower once. It was dry on top and wet on the bottom. I also had problems with the relatively small growing space and plants hanging down. I could not use all of the pockets because the plants would grow into each other and I made the mistake once of planting mint in a pocket pot so I knew that would have also taken over in the tower. I ended up planting dry herbs in the top and I had to elevate the tower since the plants in lowest holes like to sag toward the ground.
Happy gardening in Hawaii. Gardens are where people grow.