We're currently experiencing a service interruption with @YouTubeTV and working to fix it! Apologies if you're unable to access or login, we'll send another update as soon as this is resolved.
I've been using @YouTubeTV for approx. 7-8 months and this is the first issue that I have had with it. There was an audio issue during one of the NBA Finals games but it was channel related and it was resolved in just a few minutes.