Unable to get a public rank.

I am unable to enter public leader-boards , it shows that I do not have a public rank but all my setting allow quell posts to be made public. Its been sometime since I finished all levels in perfect since it cant get any better would love to post it soon enough :) I have rechecked setting several times, signed in and out and even tried disconnecting the app from google account and joining again. whatever I do , I am unable to get a public rank