Issue; Doesn’t appear to actually be multiplayer, all you see is a small blue capsule blink into existence for around ~150ms and then blink back out to never return back onto the scene itself.
I wonder if it’s because the tutorial pages are running over HTTP and your net connection is, for some reason, blocking the WebSockets traffic. Try running it from the project instead to try HTTPS.
Edit; Also happened to two other friends I got them to look at it again and they both said it’s working again as-well today but yesterday it didn’t for either them at the time.
I’m not sure… How are you running the application? What is the URL? Are you hosting it on that server or are you using that server just for the socket?
Are you sure you can connect to the socket? Something’s not set up right there probably I’m not sure what exactly - try to connect to that socket from a simple javascript page first perhaps and if you manage to connect to it it should be fine after that.
Can you test this page? In particular try connecting with TLS and without. And see if it makes difference. Some networks like in universities might be overly strict and block non SSL websocket connections. https://www.websocket.org/echo.html