Honestly speaking, I don't think there's a Stack Exchange site for this
- It's not fit for Stack Overflow because it's not a programming question
- Ask Different doesn't do questions on iTunes connect
- Super User doesn't do questions related to webservices
- I may just narrowly fit Web Applications
I think you're better off dropping by one of chat rooms on Stack Overflow and asking over there. Or as Oliver mentioned, contact Apple Support or Apple's Developer forums