When we block IP’s they get a different message usually, unless they actually tried hacking the game (you’d know for sure, doesn’t just happen).
I’d suggest trying to call your internet provider, out of experience, this problem does go away after a while but can take days/weeks to do so. If your IP is dynamic, turning off your router for 15 minutes can help.
But until now the provider has always been able to help (albeit grudgingly one time, they insisted to @Robin_Hood that they could not and then figured out it was on their side anyway after he bugged them for days...).
Sorry This just happens sometimes. The internet is a tricky thing and sometimes one user can’t route to one server... I wish we could have many servers all over the world like Google or such, but sadly we’re just not that big.
Alternatively it may be a block, can try http://prod.battlegate.net/battledawn/portal_new/ to be certain.