itch.io

Huh, that is weird.
Do you have Steam installed? A possible workaround could be to add the game as a non-steam game and opening it though there.

1. Launch Steam.
2. Click the Games  menu, choose Add a Non-Steam Game to My Library.
3. Browse for games on your computer or put a check next to the game(s) you wish to add to the Library.
4. Click on Add Selected Programs .

Maybe this can help

you can configure controls in settings -> controls