Try disabling IPv6 by going into control panel, find your network adapter in network settings, and disable the IPv6 protocol
I disabled the IPv6 and it did not work. Even tried assigning myself a static IP on my router and that was no help either.
I have tried many 'Do you have a proxy' websites and all came back negative. So......idk.
Maybe I can try to host a server and see if one of yall can connect to it? Not sure how it will help but seems like a logical troubleshooting move......