Port is open and is correct, but website cannot be reached?

So for the past week i've been having issues with accessing a game known as GTA V and their online community called Social Club (for those who don't know). Before I was pristine fine and I really didn't need to port forward anything to access it but, when I try to access the game, it told me that I was unable to connect, I need an activation. Afterwards I was really confused and I couldn't tell if I should be worried or not, so I tried accessing the Social Club website, but lo' and behold, it took me too long to access the page. I've been going through days, calling my ISP, to my modem manufacturer, to even my router manufacturer and even uninstalled the game, reset my pc and so on. I tried setting up firewall ports and that didn't work either, but throughout even further testing, I assumed that the ports were closed but in turn of events it was actually opened.
Here are some details I can give you:
-PC reset
-Modem reset
-Router factory reset
-uninstallation
-latest driver updates
-ports open
-turned off firewall
-netsh and flushdns
-use different DNS Servers
and couple more things I don't remember exactly what I did but it didn't help at all. One thing to mention is that, it's not just my device that cannot access it. Primarily all of my devices, connected to either WIFI or ethernet, they do not have access to the website with the same result.
The main suspect is port 443 is not responding, because the resource is online but it's not responding to any connection attempts
Currently i'm using a Windows 10 OS, an ASUS AC3100 and an Arris SB6183 DOCSIS 3.0

 

EDIT: Also quick to mention, i'm currently using Norton but i've allowed firewall passage from their client and Window's Firewall

 

I've contacted Rockstar and we'll see what they'll say .