Quest Complete Glitch - Act 5: The Ravenous God

So, I was fight Kativa with the Sign of Purity. My character died right before Kitava destroyed the sign. But then also said the quest was completed. After I respawned, I went to the Cathedral Rooftop to "talk to Sin" like The Ravenous God quest says to do next. But the door is closed and I can't passed it. I tried going back to Town again then going back & going to a waypoint then going back. Didn't work. I even exited the game completely and restarted it. Nope. Still closed doors. Any fix?

Try going to the next waypoint instead if the one you're going to.

I just skipped it and got on the boat to Wraeclast with Lilly Roth. Doesn't fix the glitch for the next person with the same issue, but at least I was able to move on to Act 6.