Was playing as normal today on about 10 clients.  Suddenly, all clients disconnected with a connection error message, and about 6 of the clients came back and the others went to the login screen.  None of the logged out clients were able to log back in.  As the other logged in clients were logging out, they also could not log in.  I was talking to Mod Syn and had no internet issues but could not log in to any other clients.  I tried logging in on my laptop and an android tablet connected to my WiFi and couldn't log in there either.

I then tried my iPhone hotspot and my laptop and was able to log in fine, so the issue definitely seems to be my network.  I rebooted my router, and it did not resolve the issue.  My internet is working just fine and I can access everything, but I cannot log into the game.  How could I all of a sudden be playing and then my network somehow block logins?  I've had the same network for several years and have never had an issue like this.  Is it possible the server on your side is refusing my login requests?