I have been dealing with the same issue with my African peacocks for the past month or 2. Mine used to get excited and go crazy when I went up to the tank. After I did a water change my male hid for almost a week. My females were both holding so I didn't worry too much about their behavior changes under those circumstances.
I made a few changes to my aquascaping and things seemed to get better after a week or two, but now my water change I did a few days ago I'm seeing the same thing- the male is hiding. One of my females has now become the most outgoing and the only one I see out all the time. My other female is holding and seems to be getting picked on by the outgoing female - I've never seen that before. Thinking about removing the holding female to bring her stress down.
I started a thread on this problem ur having when I first had the problem a little over a month ago but most people told me sometimes they just hide like they think they're in a new environment. It was only really suggested that i adjust my decor. I know this doesn't help u but letting u know I'm having the same issue with mine.
Good luck with your Africans hope you get some answers and good advice to get them back to normal