Hello my name is***** can help you with your question, but I need more specifics about it.
- Can you please tell me exactly what you are trying to do with your TV.
- What Brand Name and Model Number TV are we talking about here.
Are you going through the Viera cast or do you have a YouTube app directly installed on the TV?
If you are using the Aircast then you should have Viera cast settings in your settings menu. Under the network options. That allows you to connect to the the Aircast service by Panasonic which then connects you to the other services.
Do you still need assistance with this question?