That's never happened to me, Jim. I sometimes put CofE [I am after all a baptised & confirmed member of the Anglican Communion even if I have long since returned to my entirely atheist default setting; so fully entitled to the designation if I want to reaffirm my membership of that particular club]; but when I have put 'none' no-one has ever argued, to my knowledge. Tho probably best to put 'atheist', which nobody, surely, could mistake for an eccentric spelling of CofE.