The EW pair had a convention card for the event, but the 3♠ bid in this sequence was not found on their card. It was not alerted either. Thinking the bid was natural, the South player chose to pass instead of double for the lead. At the end of the auction, the North player inquired about the 3♠ bid, and was told that she thought it showed a stopper in the suit bid, but was not sure. A heart was led, which allowed the contract to make. The director was called at the end of the hand and the ruling was that there was no misinformation since the EW pair did not have a firm agreement and that the South player ought to have inquired about the bid before passing, hence there would be no adjustment.
Was this the right ruling, and was the South player correct to wait until the end of the hand before summoning the director, or should he have done so immediately after he heard the correct explanation before the opening lead? Thanks!

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