Thank you for the response! I was able to resolve the issue and finally access the "blacked out" zone by accessing my router settings, manually configuring for the mentioned TCP/UDP ports, resetting the router and clearing the DNS cache. I did have an R0 episode tonight but apparently a lot of others did at the same time as well, so I expect that was something server-wide.

I would encourage people with the same issue to configure your routers (mine is made by Netgear, so I only know how to do it for that specifically). Although I would agree something with the version update affected the settings, as I've never had this issue before, the port configuration was the key for me. Hopefully I'll stay DC free....