I had an issue with it not being able to connect to the network. Did loads of different settings: Port Forwarding, clearing mac address on the xbox, but nothing fixed it permanently. The way igot round it was:
log in to your hub router (see ee website and use your sign in details on hub label)
have your xbox switched on (so you can select it in the next bit)
then on laptop or pc/mac: http://192.168.1.254/FirewallScreen/firewall-configuration
at the bottom there is a section for DMZ. use the drop down to select your xbox and then save these settings
I'd also reset your hub (then you know its all locked in if the settings are still in place if you log back in to: http://192.168.1.254/FirewallScreen/firewall-configuration
Try xbox again and fingers crossed, should work
