Hi. I'm sorry for the issue... but the game is definitely working, and hasn't updated in a long time. So the problem is with your browser or computer.
What browser are you using? Can you share any error messages from your browser console? Or try a different browser? Or try your same browser, but with certain potentially problematic extensions disabled?
Yesterday I played the game just fine. Turned off the computer and today it's black screen. No error messages, no problematic extension. Nothing has changed since then.
I'm on Firefox 118.0.1 (64-bit). Opera gives black screen but Edge managed to open the game. Unfortunately my save is on Firefox.