Heya not sure if this will fix it, but have you tried enabling SharedArrayBuffer support in the game's itchio settings? The setting is just above where you add the description for your game.

Fun snake game! I actually liked the snake splitting off sometimes because it was like a moving enemy. If the portals were more mandatory to use (to go to different blocked off sections of the screen maybe?) and they caused different effects to the snake/worm (like creating a mirrored copy as an obstacle), this game could be even better!
First of all congrats on your first proper finished Game Jam submission! I really like it! The art is simple but nice (cool background especially), sounds and music are fitting (though the portal sound was slightly delayed for me for some reason), and the gameplay is smooth and (most importantly) fun. With some polish and more levels, this could become even better! Overall great job!
Thank you for the review! As for the chrono rounds stopping the player, I wanted to incorporate a room where the player needed to jump into the abyss and stop themselves mid-air (perhaps because they were forced by a moving walls of spikes) until a platform moved over to break their fall, but I started working on the game seriously a bit later than I should have and ... well the deadline was quickly arriving so I had to make do.😅 thanks for the kind words again!
Visuals - good, apart from the monster looking rather blocky compared to everything else. I also really liked the light.
Audio - also good, unfortunately the eerie music didn't loop so it played just once.
Theme - I think the game fits the theme pretty well, though maybe it would have been better with less oxygen as I found the exit with more than half remaining.
Gameplay - simple but fun.
Enjoyment - very fun overall, lacking a bit of polish