Hey guys, just throwing in my 2 cents but I had the same, or at least a comparable, problem.
I totally forgot I had a VPN running, which was causing the issues ( I guess VPNs are not allowed or maybe there was an IP ban on the IP used by the VPN? ). I just shut that off and had no more issues.
Otherwise you could try a modem reset, maybe you're using dynamic IP and there might be an IP issue?