i downloaded killer chat like yesterday and i was able to play it then but now when i try to click on it won open. like no matter what i do it won open so i cant play. it works immediately after downloading but if i close it after it wont let me reopen it

This board is not for issues with individual games or projects. itch.io hosts hundreds of thousands of games, if you need to contact a developer directly consult their game's page.

At the bottom of the game page there is a section for writing, so it's easier for you to get help there.

did you ever figure it out?