Port Forwarding Setting not Responding.

Hello, I'm trying to host a game for friends but I am experiencing a rather vexing issues:

When I navigate through "Connect > View WiFi equipment > Advanced Settings > Port Forwarding" nothing happens. The button is there and the other settings responds perfectly fine, but just not the Port Forwarding button. It turns grey like the others, but then nothing happens. As far as I know, this is the only way to port forward with Xfinity now so I'm wondering why it isn't working.