[bromix]

So here's the deal, after a bit of investigation. I have a main google+ page (with my real name) and then a youtube login, call it JumpingJacks. The youtube login was not linked to google+, and there's no way to set a birthday.

So I tried linking the youtube login to google+ (which I had been avoiding doing as much as possible!), and it created a new google+ page called +JumpingJacks. There's no place to set a birthday anywhere in that google+ page, it's a "business" page, I guess? Designed only for youtube.

Now when I go to youtube.com/activate, it lets me choose between using my main google+ account and +JumpingJacks. But only +JumpingJacks has all my subscriptions, playlists, etc, so I can't switch. So I need +JumpingJacks to work, somehow. When I disconnect google+ it only offers my main google account to link, which has all the subscriptions/etc again, but won't let me watch that mature content.

I did set my birthday to 1970 in my real google+ page-- which is my active google login-- and that didn't work.

Really bizarre problem. It's not the end of the world if I can't watch mature content on youtube, I've been using it for years and this is the first time that error has popped up. But it really is crazy how Google set this up.

You have to connect your G+ with YouTube.