Zed is a game created and developed by the now-closed Eagre Games.

You may find some answers to your inquiries about Zed and any issues you have with the game in the Steam discussion forums for the game, here (https://steamcommunity.com/app/953370/discussions/0/),

Please note: Any reference in those discussion which directs you to contact [email protected] for help with the game is now outdated and no longer valid. 

You can find out more about Eagre games here, too: https://unionriverinnovation.com/eagre-games/