Welcome to the Community, I'm very sorry for the problems you've been experiencing with your Netflix service recently.
I've located your account to run some tests and we're not detecting any errors. Are you noticing this issue occurring at certain times of the day or at all times? Are you able to use any other applications or view On Demand / Catch Up content at all?
Lastly, can you talk us through how you've got the V6 connected to the hub?
We had a new V6 installed yesterday and Netflix is not working on ch.204 or the app. We have another V6 in the house and that works fine, btu I see on line that some people have a problem with faulty V6 boxes.
Whether it’s any help to others, my problem was because despite being hard wired to the virgin hub, it was in modem mode. i.e. running through my own router. Switching back to the virgin router, a couple of v6 reboots and running updates in settings, and it was all sorted. Thanks to the lass at virgin media second line support!!