I'm seeing this too when trying to download the demo:
"WARNING: This Page Has Been Quarantined"
This game is amazing. What is the best place to report a potential bug? I think I got into a stuck state in the dungeon with the bat boss. I reached the bat boss through a secret passage and didn’t trigger the blue orb first. After beating the boss, I can’t exit through the blue orb gate and the secret passage is closed. https://imgur.com/a/71B1G4h. If there is a way out, it isn’t obvious to me at all :)