I added a Resolution, which wasn’t compatible with the Web launcher. Maybe implement the Fullscreen Function in itch.io so others wont suffer from this issue and I can give it another shot.
Fullscreen on web enabled. Thank you so much for pointing this out!
I always set this on my games, but I've found those settings changes don't work until you have uploaded your first web build, and I forgot to check the box after I did it.
