Cannot connect to Halo Waypoint

I’ve spent hours after hours, figuring why I can’t connect to Halo Waypoint. Talking to the internet providers, which told us that maybe the router blocked it? No. Maybe that we need to reset the router? No. Firewall? No. And finally told us, maybe they blocked you maybe because of some suspicious activity? How can that be when all I want to do is look at the news and play Halo? They didn’t know what was wrong because it works on their end. It not blocked on our end. So they told us to point out fingers at you guys lol.
Any way, I appreciate it if you guys could contact support and help me.
I am on this on my Mom’s phone if you were wondering… sigh
Xbox Live: FastxNxDeadly
The rest you can contact me what you need.

Have the same problem as you, before I was able to go on this site, but this year, somehow I couldn’t. I was able to go through my phone 4g internet. but never in my network. Long story short, I had to disable my modem (with built in router) firewall features. and now I’m able to view this website. I don’t know why my isp or router decided to block halowaypoint.com