Nice work with this, the theming of the music and art works well together. I have an ultra wide monitor, and unfortunately the UI breaks for me. That being said I was able to figure out what to do based on your screenshots.
Something I like to do when building for jams is just force the 1920x1080 aspect ratio. You can change it in build settings -> player settings -> resolution and presentation. It just fits most peoples monitors, and I can focus less on UI and more on the game.
