ATT Routing issue to open source software website hosted in France
I cannot access the website https://godotengine.org from my ATT home internet (fiber).
I'm using ATT provided fiber and wifi equipment.
I cannot ping the website.
Nor can I traceroute to it.
When I switch my same device (phone, laptop, desktop) to use my cellular hotspot, I can access the same website just fine.Since the same device cannot access via ATT fiber but can access via cellular hotspot this seems to me to be a network routing issue.
How can I troubleshoot this further or get in touch with ATT NOC persons to help?
I already contacted ATT support and all they could tell me to do is reboot my computer, my wifi router, and turn off my firewall. None of those items had any effect. Perhaps there is a more appropriate support group that can help?