iphone - iOS App rejected iTunes 17.2 clause -

i've had app rejected due 17.2 clause

17.2: apps require users share personal information, such email address , date of birth, in order function rejected

my app requires users create user account before able use app. data in app tied specific user. rather create custom login, seemed simple enough users signup facebook "one-click" account creation instead of having fill out new account form. used facebook graph sdk ios accomplish this. however, did not use other features facebook sdk , result of doing so, app rejected. have couple of uncertainties hoping answered.

can implement custom create account without risk of getting app rejected? custom create account require fields such username, email, , account password.

i read somewhere in order apple approve custom account creation, app must have sort of privacy policy. true?

what classify "significant" use of facebook services justify use of facebook authentication? using features such share facebook , invite friends significant enough use in app approved?

i'm curious know how others have solved problem , advice or tips appreciated.

facebook very annoying clause. isn't how using facebook sdk, asking users create account via means. have justify features user-oriented. can bend world in favor on how this, though.

for example, though feature seems okay if user doesn't register, can argue, "for better user experiences, calculate user's performance on these features, , associate account."

or, can go saying "although seem not user-related, use gender information serve correct content."

privacy policy must. need accessible through app , through app store page.

while working our app accepted after got rejected same clause, team spent whole day trying relate every major feature such account necessary. news is, got accepted!

on note, facebook friend invites fine, making users upload profile picture , create own contents need explained. ask questions such "who able see these contents?"

it tedious process, more of a, "provide information , i'll let pass" kind of thing. luck!