I'm having a similar problem. The game has worked perfectly fine for 2 days. But suddenly it stopped working. I can see the login screen but when I click play only this is visible:
I have connected my private laptop as a server - and nobody could access it =S Try now please. If it still doesn't work - open console (F12) and make a screenshot for me
Ideas
I have translated your problem with google translator.
Can you tell me what is going on? Black screen?
Playin at school or work is usually not possible
Try Chrome
I'm having a similar problem. The game has worked perfectly fine for 2 days. But suddenly it stopped working. I can see the login screen but when I click play only this is visible:
I have connected my private laptop as a server - and nobody could access it =S
Try now please.
If it still doesn't work - open console (F12) and make a screenshot for me
Im connected to a 5G wifi connection
SAME