As a Roblox developer, there isn’t a way to determine why an experience is closed, or add a reason to one on why it’s closed.
Currently, I want users to know why a place of mine is locked from entry. However, there isn’t any feasible way to do so where it says 'Sorry, this experience is private`, something like a ‘reason’ box when a game is set to private in game settings would be good, a usecase is a debugging place for small projects, allowing users to know what this place is intended for, or a main game receiving updates:
If Roblox is able to address this issue, it would improve my development experience because I can add a reason to workshops or my games why a game is private, and not play the guessing game.