Congratulations on getting accredited!
The influence rank has been an old model that has been taken down, as it is getting updated right now.
You can only add missing content for youtube, as you do not have a youtube account connected, the button isn't showing up to you.
Basically the biggest change with the accreditation status is that you are on another list with the publishers.
On default, the unaccredited and pending accounts get listed out of the view of devs, they have to click on a special check to make those visible to them. As they like to send keys out to users that have been checked first, most of them leave the unaccredited accounts filtered out and only send keys to those that are accredited.