You will need to be connected to the hub by ethernet cable as you are in modem mode. Try it again if it doesn't work. You may have to reboot the Hub once you have connected a device to the hub. I would also check that you are not using a proxy or VPN.
The Pinhole Reset can be a bit finecky at times, you will need to push the pin in for a good 40secs with the Hub switched on.