Ok the invisible menu seems to be related to a thing called WebGL (it's a kind of hardware acceleration thingie), and it can sometimes be disabled on Chrome for some reason. You can try these things:
In Chrome, go to settings and press advanced settings and then scroll down and see if "Use hardware acceleration when available" is checked or not, if it's not checked, then check it, then restart Chrome.
Then you can write this address in the Chrome bar: chrome://flags and press enter.
Then find this line:
Disable WebGL
Mac, Windows, Linux, Chrome OS, Android
Enabling this option prevents web applications from accessing the WebGL API.
and see if it says "disable" or "enable" underneath it. You want it to say "enable", so if it says "disable" then press it. Then restart Chrome.
If it still doesn't work, it way be something with your graphic card or similar, and in that case you'll just have to use another browser, for example Firefox or Edge.
Good luck and thanks for playing!