It really bugs me that Instagram doesn't have a support number to call, or an email address to request any information about their API. I have to build my app completely, then submit it for review. The review process takes quite a while.

Pro Tip: if you're building a developer REST API, don't forget to add a sample response to each endpoint. I don't want to have to test each one when I'm building my integration, I'd rather build my model in one go with the documentation displayed on a second monitor.