Thank you so much for your help ! It says that:
xattr: /Applications/Lueur.app: No such xattr: com.apple.quarantine
It's so weird. I can't wait to play it :)
Viewing post in Dawnfolk (Itch Exclusive Supporter Edition) comments
Huh, this is getting really annoying, I'm sorry. Other people who had the issue managed to fix it with this line, I guess maybe your OS has something different. I removed the app from the itch page, I'll put it back when I know for sure this problem won't happen again. Do you use steam to play games? I can send you a steam key by mail if you'd like, Steam sign all games directly so it should not have that issue. Reach out to me at darenn@dawnfolk.com and I'll give you one.
If you don't want a steam key, send me your paypal by mail, I'm gonna refund you.