'm stuck on the market of Renaki Moon without being able to do anything. The game no longer gives me any indication to find Amadu. Help me please !

I finally made my way to Renaki yesterday. You probably don't need the answer anymore, but:

SPOILER:




From the starting point (where you hoppered down) you walk into the first market place. There is an open gate somewhere to get to a second market place. There is a woman selling geckos and stairs next to the stall, on the right. Go up the stairs and you will find Amandu/Amadu.