As others have pointed out, there is an issue with the webgame resolution; a quick fix is to enable a fullscreen mode button in the itch.io page settings. More importantly the resolution of the window needs to match your game’s resolution, because it doesn’t seem like the game is responsive to dynamic resolution changes, so it gets cut off to the point where its unplayable - this will probably need some more tweaking in your Unity project settings itself. I had to edit the HTML source to make it 1920x1080 to play the game.
The art is very impressive! It’s a very cute and relaxing game and I’m pleased to see that there are unique characters to talk to. I had the same problem as Doot, couldn’t click the top-left one, and sometimes the swapping is bugged out and I couldn’t swap certain tiles. Overall, it’s a fun game with an interesting setting and dialogue. To do all this in only 48 hours deserves high praise. Excellent work!