I was an existing virgin media customer and upgraded my router today from Superhub2 to superhub3. No internet connection at all - just a flat yellow/white line and when I test it it says "Gateway IPv4 address is not valid".
Spent 1 hour on the phone to customer service. They told me that they did something like "rebalance the router" or something, and that it would be up and running guaranteed in 30 mins. I said I would be reticent to hang up and then wait on hold for another 50 minutes, they told me not to worry, it was almost certainly going to work. It's been over an hour and still no success. Have resetted/rebooted a billion times too.
If someone could help that would be greatly appreciated!
I would try a full reset. If you look on the back of the hub there will be a tiny hole with a little button inside. You use something small like a pin or toothpick to press the button, hold it in for 30 secs and release. Then let hub reset and reboot back to a single white light. The try again.
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