Hub is set up and installed but trying to connect via the Virgin Media Connect app and it fails instantly after clicking through install process. Error message reads "We can't find your Hub. Looks like we've lost connection. Please try installing aga...

Hello!Just had the engineer came and install the broadband cabling and set up the router and TV.However, I've not received any welcome email or bill so I can't sign up for the My Virgin Media app.Any help would be great?Thanks!