Read the warning message at the top of the game's description.

https://abken.itch.io/wowie2-game-jam-start-the-game-the-main-menu

You HAVE TO hit BACKSPACE 4 times due to a bug at the beginning of the game. Later in the game you'll get TIPS and ADVICE how to play and what keys to press. There are INGAME tips. But to start the game you HAVE TO press BACKSPACE 4 times.

P.S If you have more questions, you can DM me in Discord, but the game is self-explanatory. Sorry for the unintentional bug at the beginning of the game. Just press BACKSPACE 4 times and you're good to go.