Couple of ways and suggestions for contacting YouTube support when some issue occurs
I noticed that recently YouTube developers make plenty of changes in the site interface and due to the account and privacy changes that are happening for all Google products.
As you probably know most of Google services are merging in users' accounts so they can access these services with a single sign in and use the same credentials for the different services like YouTube, Google+, AdWords, AdSense, Blogger etc.