I have the same problem. When I try to lauch the game through itch.io, I get the message that executable file is not found. When I open the folder with the game and launch the game from there, I get the message that the file is damaged.
Thanks for letting me know about the problems you're facing. I'll try to check this issue as soon as I can, but I can't promise when. I haven't . done work on HaxeFlixel / AIR in a while... I'll post on the devlog if/when I find a solution for it.