Yeah I have done all the obvious tests resets log in and out my accounts work on my other smart TVs it just seems to be when using it through virgin box iv tried the likes of bbc player and those are fine it just appears to be the ones I need to log into. It will initially load show me all the movies etc allow me to pick then nothing.
Are you able to log into the Netflix account without issue? If you can log into the Netflix via your V6 box, have you logged out of the account on the box itself? You can do this via the following steps:
Pressing Home on the TiVo remote control
Navigate to Help & Settings
and then System Info
and then Netflix Account Information and select 'Sign Out of Netflix Account'
Can I also ask you to ensure that you're connected to the Virgin Media network by going through the following steps:
Home> Help&Settings> Settings> Network> Connect to Virgin Media Service Now
Once you have done both of these, try logging back into the Netflix app and test again.