How often are you supposed to run to the computer to let your Philips TV get access to your Youtube account?
Is this required every single time I start the Youtube app?
The big reason why I got this Smart TV is that I could use my Youtube-account WITHOUT having to deal with my computer.
How often ? Each time you want to access to your Youtube account, unfortunately !
But you can get access through your mobilphone instead of your computer, that's easier. For this, you have to download the app "Youtube Remote" on your phone (available in Appstore and Google Play). And then you will be able to pair the two screens and command your account through the phone.
More simple : you let SmartTV away, access to your Youtube account through your phone (usual Youtube app) and transfer image and sound to TV via DLNA.