En passant does not work now

Tried to use en passant in my last game, but it did not work. Please look into this, admins.

Could you clarify which game and what move you think it was possible?

Because, if you were talking about the following game, en passant was never possible.

https://www.chess.com/live/game/1813667172

That's the game, why is not en passant not possible (in move 9)?

Your pawn was in c6,not in c5!In order to en-passant,we need the pawn on the same rank 

Your pawn has to be on your 5th rank and your opponent has to make the initial pawn move of two squares, on an adjacent file, passing your pawn, ending up beside it. You then have the option on that move to take it as if it had only moved one square.

https://www.chess.com/analysis/game/live/4793770330?tab=report Someone tell me why in the 20th move en passant not work on pawn on e4 ?

There was no point in that game where en passant was possible.

https://support.chess.com/article/683-what-is-en-passant