Thanks for your comment, and we're sorry to hear that the resolution is not working properly.
Could you please try the following steps?
1. Set your display resolution to 1920x1080.
2. Open the game and then close it.
3. Set your display resolution back to your original setting.
4. Open the game again.
By the way, the designed resolution for this game is 2560* 1440, and it should work fine on normal 2K or 1080p monitors (since it works on my laptop, with a 2560*1600 monitor, and I've tried setting my screen resolution to 1920*1080, where the game works fine as well). I guess I might have misconfigured something so that the window failed to fit with your screen, but I can't change the uploaded project at this time since Itch is limiting it.
Again, we're very sorry to hear the problem, but unfortunately, the help we are able to provide is limited.