The Hidden Forest

I've got three different machines, all that were logged in earlier today. Now after entering station name and password, we're stuck the box Logging in to the server. I've also tried using cell phone hot spot with no luck. Rest of internet seems to be working fine. Ideas, hints, suggestions ?

Have managed to log a couple in now, not sure what the cause was.

This just happens occasionally. I'm not sure what the root cause is myself. I just exit and keep trying until I can finally get in.