I have no clue what I am supposed to do. I love tower deffense games and I liked the multiple ellements, but it seems like the towers don't work :(
It seems like this was one of your first jams, which is awesome! You took time out of your life and decided to make something. You should feel proud and you'll probably do way better next time. A good tip is aim to have the first prototype done after the first 24 hours and upload/save this build so you always have a working game if all else goes wrong.
Have a good one :)