Think I'll switch back to old hub. This one keeps dropping connections.
You can't as VM will have disabled it when they provisioned the Hub 4.
not 100% true - you can buy=t it might be an uphill struggle - you need to ring and get them to re activate the old hub
why did you change
regarding the smart lights - have you reset them up - they will still be looking for the old hub wifi - you need to press the button on them and start again - if they still will not work split the bands on the hub4
regarding the hub4 dropping connections - splitting the bands should help as will turning off smart wifi