Why does it not work, all i get is a spinning disk then nothing, or An error has occurred. Try again later.

Hi, this is the first app and time using apple forums and my question. I published an app and it says ready to distribute i have tested the link and installed it on my phone, however on the App Analytics it says "Not Enough Data". Know its been downloaded and installed because i did it but it shows as i said not enough data, is there a delay of a certain time, is there a difference between private and business. How can i find out if there has been a purchase, nothing is displaying as i was expecting.