Unable to connect to invalid server

I keep getting the error

“you have attempted to connect to an invalid server”

I have tried the following to fix it

Reinstall the game
delete cache
restore firewall defaults
corrected windows host file
tried 3 different connections (same router just 3 different ways to connect, 1 wired and 2 wireless)
restarted both pc and router twice
tried U.S., Asia, and Europe

This seems to only effect SC2 as I can log in and play Hearthstone and WC3