Only things I can think of are:
Did you send a copy of your home state CCW?
Did you put down references(I forget if Centre required these)?
They should have told you what the reason was. I think PA law requires each county to issue to a non-resident if someone applies. So Denny Nau's 2A beliefs are somewhat irrelevant. FWIW, I got mine from his county within 2 weeks.
You should call and ask. You may be on a terrorist watch list(no joke,some people end up there for strange reasons).