Can't connect here too.
I'm from Brazil and my ISP is VIVO, also tried to call then and got answers like "if your network is connected we can't do nothing."
I can't access any of the SE network's websites. Got to be able to access it through VPN so I could post about this issue.
Ps4 player that already tryed VPN, Proxy, Mobile Hotspot for 3g/4g. Nothing works...