I have some issue while creating a new app on iTunesConnect; when I click on the "+", it's not opening the scroll menu. No error in the console, I've contacted Apple, but no answers. Is it only me with this problem?
I had the same issue. There was an update on the contract / license agreement to review and approve (I had an advice on the iTunes connect main page). I did it. Then I came back to iTunes connect and now I can add a new app.
You may need to logount / login again after approving the new license agreement.