Hello,
I'm bout to necro this thread because this is still an issue. I have been stuck at 5/7 for years, doing Honor Mode now. My theory is that this is connected to Alexander / The Sallow Man. Maybe if we get the information from them (which God is alligned to which celestial body), the altars no longer work. I got stuck at Amadias altar; I only heard the chirping of birds. The narrator said that I could see a symbol of a moon, but that was not true in game (the altar did not change at all, no symbol appeared like it did for the other altars).