Lerpz Escapes Start Menu Doesn't release,Start Menu Gui does not release

I created the start menu for Lerpz Escapes. When I press “play” I briefly get “IsLoading…” and the start menu background music, but the menu does not release or “go away” so I can play the game. I can’t see anything in the code that would make it do this. What am I doing wrong? ,

I know this is old, but I was having the same problem and found a solution.

Make sure to add both StartMenu and TheGame to your Build Settings (File>Build Settings)