Thank you for your comment and for trying the game.
Did you have a chance to check the controls/instructions in the itch.io description?
I understand that the browser version can sometimes fail to register inputs properly.
If you're interested in the game, I'd really appreciate it if you could try downloading and playing the EXE version instead.
Even in browsers where the controls seem unresponsive, some players have been able to enter the shop by switching to fullscreen mode, pressing WASD a few times and then pressing Space, or simply left-clicking.
If you have a moment, I'd be grateful if you could give it another try.