First, I'll agree that the puzzle is a little cryptic! We rushed to create this game, as you can imagine, since it was a 4 day jam. So the game could do with more guidance.
I'll hint at a few things *spoiler warning*
You do have the correct hunch about acceptance, the trick is to understand how do you do it?
It may be linked to the constellation artworks and what written on it 😁 What they show also exists in another room.