There are some reports from players that they get WHITE SCREEN or 504 GATEWAY TIME OUT
The 504 Gateway Timeout error displays inside the Internet browser window, just as web pages do.
504 Gateway Timeout errors might be seen in any Internet browser in any operating system.
Cause of 504 Gateway Timeout Errors
The 504 Gateway Timeout error is an HTTP status code that means that one server did not receive a timely response from another server that it was accessing while attempting to load the web page or fill another request by the browser.
This usually means that the other server is down or not working properly.