Thanks for sharing! I've done some multiplayer but it was using a P2P model with Noray acting as a relay which I don't believe works for web exports due to browser restrictions on UDP.
Browser restrictions was definitely pain. I had to use a domain to create a dns record and get certbot and everything on the cloud instance. Very cool when you see it working though and play with friends. I really want to reuse this method and maybe working on a longer run game dev project some day. Turns out I really enjoy doing a little game dev.