[Can't find world server]

My computer is java 11, the server is running 8, how can I update the server

 

 

[Can't find world server]

How can I change the java version of the server? I did it through windows and my java version is updated...

 

[Can't find world server]

I followed all the steps in the tutorials on setting up unity packages and setting up the windows manager server, I am getting the error "Can't find world server" But my world server is up and so is my authentication... I don't know whats wrong and haven't been able to figure it out... I am on version X and used the 3 part download then used 7zip to put them together... Help?